Re: [mailop] Domains discrimination

2024-07-10 Thread Andrew C Aitchison via mailop
e TLD is" problem since it's not just the last segment. Since the OP is new here, i will mention th Public Suffix list https://publicsuffix.org/ -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: [mailop] Cloud hosts for responsible mail servers?

2024-07-09 Thread Andrew C Aitchison via mailop
works well for me though maybe not for the OP with one user and 10 domains, but I am paying less than his five bucks per month. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk___ mailop mailing list mailop

Re: [mailop] Why an SPF hard bounce on ~all ?

2024-06-27 Thread Andrew C Aitchison via mailop
? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

[mailop] BIMI and ARC

2024-06-10 Thread Andrew C Aitchison via mailop
r possibly swaks on my machine). -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] Yahoo no longer accepting email forwards?

2024-05-21 Thread Andrew C Aitchison via mailop
DMARC) I had not realized that SRS was possible without SPF. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] (Mis)use of DKIM's length tag and it's impact on DMARC and BIMI

2024-05-17 Thread Andrew C Aitchison via mailop
things can happen. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] Doesn't ARC substitute DKIM at Gmail inbound?

2024-05-05 Thread Andrew C Aitchison via mailop
the mail, but cannot prove that it really came from the original sender. I think that this way GMail can reject the email, or put it in the spam folder, but without blaming you. I am not sure that ARC is supposed to do what we think it is. -- Andrew C. Aitchison Kendal, UK

[mailop] MX records required - Was Re: Problems with invoices.premierinn.de and postmas...@premierinn.de

2024-04-26 Thread Andrew C Aitchison via mailop
AA record addresses ? TonyFinch> Too late for that by about 10 years, I'm afraid. Looks like that dream is getting further away :-( We wont will that fight if we don't push for it. On 25.04.24 14:59, Andrew C Aitchison via mailop wrote: Should someone here not know, RFC 7505 A "Null MX&

Re: [mailop] Problems with invoices.premierinn.de and postmas...@premierinn.de

2024-04-25 Thread Andrew C Aitchison via mailop
ve them a heads-up. Kind regards, Paul PS: Of course, their software does not detect rejected messages/failed deliveries, and their staff claims, it’s in the spam folder. -- Andrew C. Aitchison

Re: [mailop] Off-Topic - VMWare ESXI 7.0

2024-04-17 Thread Andrew C Aitchison via mailop
I'm stuck with the architecture for the next couple of years. So you are looking for someone to add support for that architecture to Proxmox, maybe in a consortium with other interested parties ? [ I am *not* bidding, nor interested in joining the consortium. ] -- Andrew C. Aitch

Re: [mailop] mailop and DKIM signatures

2024-03-21 Thread Andrew C Aitchison via mailop
more about this software ? Thanks, -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] Google unsolicited mail rejected with 421

2024-03-14 Thread Andrew C Aitchison via mailop
operates in permanent queue running mode which could lead to a retry every minute if the queue is nearly empty. This is more or less "aggressive" ... An *inbound* queue runner sounds like a special case - I would expect it to be more "aggressive". -- Andrew C. Aitchison

Re: [mailop] Ubuntu Noble/24.04 - TLS 1.0, 1.1 and DTLS 1.0 are forcefully disabled

2024-03-14 Thread Andrew C Aitchison via mailop
in security. For IMAP and POP, encryption is end-to-end, but there you know, and presumably have control over, your users. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop

Re: [mailop] Ubuntu Noble/24.04 - TLS 1.0, 1.1 and DTLS 1.0 are forcefully disabled

2024-03-13 Thread Andrew C Aitchison via mailop
such a device (although I was aware that people would have to decide again about allowing plain). Has anyone checked what traffic is still using TLS 1.0 or TLS 1.1 ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

[mailop] Ubuntu Noble/24.04 - TLS 1.0, 1.1 and DTLS 1.0 are forcefully disabled

2024-03-12 Thread Andrew C Aitchison via mailop
is not new for openssl, but it is for gnutls. Given that the advice for SMTP is often to allow tls 1.0 and 1.1, rather than have it revert to unencrypted, this will is something to watch out for. -- Andrew C. Aitchison Kendal, UK and...@aitch

Re: [mailop] Filter out emoji from email adresses

2024-03-06 Thread Andrew C Aitchison via mailop
several list messages last month with mail addresses with what looked to me like CJK characters. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https

Re: [mailop] Contact of postmaster for hostedemail.com domains

2024-02-26 Thread Andrew C Aitchison via mailop
they would like to do is to complain to any mail provider. They just take it for granted that "it is so" that the recipient sometimes doesn't get the email, and you have to live with it. If nobody complains, then a single complaint is likely to get attention :-) --

Re: [mailop] One click unsubscribe in mailing list messages

2024-02-24 Thread Andrew C Aitchison via mailop
I provide my opt-out preferences by ... "visiting a single Internet Web page" ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

[mailop] CloudSererblocks - was Re: Outgoing Spam from Microsoft IPs

2024-02-16 Thread Andrew C Aitchison via mailop
ve traffic from Alibaba so cannot judge for myself. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] Is forwarding to Gmail basically dead?

2024-02-11 Thread Andrew C Aitchison via mailop
put in clauses guaranteeing no spam from addresses associated with with the customer's mail. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk___ mailop mailing list mailop@mailop.org https://list.mailop.org

Re: [mailop] zen.spamhaus.org

2024-02-07 Thread Andrew C Aitchison via mailop
-Lõks OÜ (reg. no. 12815457, VAT ID EE101811635) Tallinn, Estonia tel. +372-5883-4269, https://www.koliloks.eu/ ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop -- Andrew C. Aitchison Kendal, UK

Re: [mailop] Support contact for Shaw.ca

2024-02-02 Thread Andrew C Aitchison via mailop
bare linefeeds, your bounce message may be leading him astray by suggesting he has sent bare carriage-returns. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk___ mailop mailing list mailop@mailop.org https

Re: [mailop] Anyone else noticing an increase in spam from Office365 distribution lists?

2024-01-14 Thread Andrew C Aitchison via mailop
domain additions to a safelist from the hypothetical block rule, and that would be it. - Mark Alley -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] BIMI and multiple hops

2024-01-13 Thread Andrew C Aitchison via mailop
On Sat, 13 Jan 2024, Benny Pedersen via mailop wrote: Andrew C Aitchison via mailop skrev den 2024-01-13 07:16: [ Wearing an MTA developer's hat. ] +1 I see that an MTA is supposed to remove existing Authentication-Results and BIMI-Indicator headers, and that generally an MUA may use

[mailop] BIMI and multiple hops

2024-01-12 Thread Andrew C Aitchison via mailop
received a message with these headers there is a risk that the MUA would trust them. Would it help if MUAs that don't actively support BIMI at least removed these headers when delivering to local mailboxes ? -- Andrew C. Aitchison Kendal, UK

Re: [mailop] BIMI boycott?

2024-01-10 Thread Andrew C Aitchison via mailop
that far exceed those of the message itself. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] BIMI boycott?

2024-01-10 Thread Andrew C Aitchison via mailop
of the aims of BIMI is to encourage correct use of SPF/DKIM/DMARC. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] Malformed To: header

2023-12-30 Thread Andrew C Aitchison via mailop
it was particularly visible. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] ECDSA DKIM validation?

2023-12-21 Thread Andrew C Aitchison via mailop
to switch ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] Merry Christmas from Google?

2023-12-17 Thread Andrew C Aitchison via mailop
. If they use forwarders, SPF will fail in the case the envelope sender isn't rewritten. Check your logs for that. I think Jarland meant that his system allows users to forward received messages (to Google). -- Andrew C. Aitchison Kendal, UK

[mailop] Historical spam loads - was Re: Google rate-limiting more aggressively than usual?

2023-11-19 Thread Andrew C Aitchison via mailop
fewer messages I can only imagine that is because their strike rate is better, which is *more* worrying. What have I misunderstood ? but I wouldn't be at all surprised if some sites still have a 90%+ spam burden. -- Andrew C. Aitchison Kendal, UK

[mailop] ClientID - was Re: Microsoft lays hands on login data: Beware of the new Outlook

2023-11-11 Thread Andrew C Aitchison via mailop
On Sat, 11 Nov 2023, Carsten Schiefner via mailop wrote: Hi Andrew, Am 11.11.2023 um 14:25 schrieb Andrew C Aitchison via mailop : […] I guess we need to look at ClientID https://datatracker.ietf.org/doc/draft-storey-smtp-client-id/ (SMTP) https://datatracker.ietf.org/doc/draft-yu-imap

Re: [mailop] Microsoft lays hands on login data: Beware of the new Outlook

2023-11-11 Thread Andrew C Aitchison via mailop
r.ietf.org/doc/draft-storey-smtp-client-id/ (SMTP) https://datatracker.ietf.org/doc/draft-yu-imap-client-id/ (IMAP) and OAuthBearer RFC7628 to see whether either or both could help us identify the incoming client sessions ? -- Andrew C. Aitchison Kendal, UK an

Re: [mailop] Microsoft lays hands on login data: Beware of the new Outlook

2023-11-10 Thread Andrew C Aitchison via mailop
and fetchmail to do to access Microsoft-hosted mailboxes ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] valid DKIM-signed email spam-classified @gmail only; correct PASS @ other server recipients ?

2023-10-29 Thread Andrew C Aitchison via mailop
egorized as SPAM. Maybe the spammers are more likely to use ed25529 than legitimate mailers so GMail think it indicates spam ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@ma

Re: [mailop] fastmail and sender score snafu

2023-10-09 Thread Andrew C Aitchison via mailop
and the forwarding information is stored on the mailstore, he wont know whether the domain is local or remote until the mail store comes back on line. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

[mailop] DMARC report rejections - was Re: Recent increase in GMail 421-4.7.28 responses

2023-10-06 Thread Andrew C Aitchison via mailop
check that the report domain is willing to accept these reports. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] Google not sending DMARC reports since 9/25

2023-10-03 Thread Andrew C Aitchison via mailop
. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] Zero-day RCE for exim - whacky stats?

2023-09-30 Thread Andrew C Aitchison via mailop
On Sat, 30 Sep 2023, Carsten Schiefner via mailop wrote: Hi Simon, On 30.09.2023 10:18, Simon Arlott via mailop wrote: On 30/09/2023 08:50, Andrew C Aitchison via mailop wrote: I see that there is an Exim release candidate out on test at the moment https://lists.exim.org/lurker/message

Re: [mailop] Zero-day RCE for exim - whacky stats?

2023-09-30 Thread Andrew C Aitchison via mailop
/2023/09/critical-vulnerabilities-in-exim-threaten-over-250k-email-servers-worldwide/?comments=1 gives a more plausible stat. [ A quick grep suggests 12 other mailop threads this year have mentioned exim. ] -- Andrew C. Aitchison Kendal, UK

Re: [mailop] Zero-day RCE for exim - whacky stats?

2023-09-30 Thread Andrew C Aitchison via mailop
On Sat, 30 Sep 2023, Andrew C Aitchison wrote: On Sat, 30 Sep 2023, Jay R. Ashworth via mailop wrote: I haven't even heard exim *mentioned* in like 20 years; these stats can't be right, can they? https://www.bleepingcomputer.com/news/security/millions-of-exim-mail-servers-exposed-to-zero

Re: [mailop] Microsoft announces DANE for Exchange Online Inbound starting next year

2023-09-29 Thread Andrew C Aitchison via mailop
. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] Sendlane Inc [ESP] New IP range warming notice

2023-09-15 Thread Andrew C Aitchison via mailop
:https://rdap.arin.net/registry/ip/38.152.0.0 ... You may wish to check your rwhois data. I have also seen "SWIP" mentioned in similar cases ... -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: [mailop] OT: OpenTable

2023-08-30 Thread Andrew C Aitchison via mailop
ponse when tipping, then I am impressed. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] Antivirus/anti-phish email scanning

2023-07-31 Thread Andrew C Aitchison via mailop
products get on with any particular virus Use AV products by all means, but don't assume they will catch everything. Do have plans for if/when you find something; both before and after it causes harm. -- Andrew C. Aitchison Kendal, UK

Re: [mailop] Guide for setting up a mail server ?

2023-07-13 Thread Andrew C Aitchison via mailop
paper mail; why not email ? Former staff don't have door keys. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] Please don't Cc: me, use only the list for replies

2023-07-12 Thread Andrew C Aitchison via mailop
On Wed, 12 Jul 2023, ml+mailop--- via mailop wrote: On Wed, Jul 12, 2023, Andrew C Aitchison via mailop wrote: Please could you indicate who you are and, Why? Sorry, I meant to ask for a name or an alias. Why ? Because I don't believe that "the paranoid curmudgeon from esmtp.org&quo

Re: [mailop] Please don't Cc: me, use only the list for replies

2023-07-12 Thread Andrew C Aitchison via mailop
are and, if appropriate, who you work for or represent ? Thanks, -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] SendGrid is deleting your mail

2023-06-23 Thread Andrew C Aitchison via mailop
that considering the MX when overriding the response code would be a worthwhile addition to try, whether the machine learning is AI-based or hard coded. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ ma

Re: [mailop] DMARC and subdomains

2023-06-18 Thread Andrew C Aitchison via mailop
he "v" tag. "v=DMARC1;p=none;sp=none;pct=10;rua=mailto:dmarc-mas...@eu.org;ruf=mailto:dmarc-mas...@eu.org; Thanks, -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing lis

Re: [mailop] DMARC check case sensitive domains

2023-06-13 Thread Andrew C Aitchison via mailop
1A20 B9AA 87D4 84C7 FBD6 F3A9 9442 20CC 6CD2 ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop -- Andrew C. Aitchison Kendal, UK an

Re: [mailop] SPF: Does include: a host without TXT entry invalidate the whole SPF entry?

2023-06-12 Thread Andrew C Aitchison via mailop
reports so far this year. dmarc.ruf reports are not common, but on a busy site there will be enough to need to have a policy for them. I hadn't heard of the SPF tags before Friday. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: [mailop] SPF: Does include: a host without TXT entry invalidate the whole SPF entry?

2023-06-09 Thread Andrew C Aitchison via mailop
by most SPF checking sites... I asked one of the checker websites about that and recieved the reply: RFC6652 is a proposed standard from 2012, but was replaced by DMARC in 2015. DMARC reports on both SPF and DKIM. Benoît, does the domain in question receive DMARC reports ? -- Andrew C

Re: [mailop] Microsoft Office365 not rejecting emails when instructed so by SPF recored?

2023-05-27 Thread Andrew C Aitchison via mailop
to Google what Musk did to Twitter ... -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] Official traffic shaping rule sources?

2023-05-08 Thread Andrew C Aitchison via mailop
any advantage to put against the cost of an extra connection setup and closedown ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo

Re: [mailop] SPF behavior on email forwarding

2023-04-14 Thread Andrew C Aitchison via mailop
/rpr.html (dated Sept 2004) which explains how SRS (without SPF) is the answer to the problem SPF was supposed to solve ! [ I was actually looking for the theoretical slightly-open relay issue which made me not enable SPF or SRS for a long time. ] -- Andrew C. Aitchison Kendal

Re: [mailop] SPF behavior on email forwarding

2023-04-14 Thread Andrew C Aitchison via mailop
mount of emails we'll handle. Many people use SPF failure (and DKIM, DMARC and ARC) to increase spam-score, rather than an all-out block. Do you have an actual measure of how much spam this is currently blocking ? It *may* not be as bad as you think. -- Andrew C. Aitchison

Re: [mailop] linodeusercontent.com/googleusercontent.com, I'm so done with you

2023-04-04 Thread Andrew C Aitchison via mailop
oss anyone. Can you come up with a business model that encourages this ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] mailgun anybody? (variable sender address) time

2023-03-26 Thread Andrew C Aitchison via mailop
On Sat, 25 Mar 2023, Slavko via mailop wrote: Dňa 25. marca 2023 17:11:48 UTC používateľ Andrew C Aitchison via mailop napísal: On Sat, 25 Mar 2023, Grant Taylor via mailop wrote: I never understood different envelope senders for each attempt of a given message. -- I can see different

Re: [mailop] mailgun anybody? (variable sender address) time

2023-03-25 Thread Andrew C Aitchison via mailop
submission time until delivery time. I guess that having something to trace individual attempts though the logs is useful if you are working at scale and the typical user is more likely to report the sender address than the message id ? -- Andrew C. Aitchison Kendal, UK

[mailop] SMTP equivalent of HTTP 30x redirect ? - was Re: O365 throttling email forwards

2023-02-28 Thread Andrew C Aitchison via mailop
, but is this option technically available ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] Gmail blocking of good customer

2023-02-24 Thread Andrew C Aitchison via mailop
every 2-3 months when they promote a new event. I think you should try and send at least ~100 mails every day to keep an IP warm. Otherwise you're a ghost... So now you have to send spam to avoid being thought to be a spammer ? -- Andrew C. Aitchison Kendal, UK

Re: [mailop] Compromised email account trends

2023-02-22 Thread Andrew C Aitchison via mailop
chine/user pairs as long as an IMAP connection is using IDLE. On Wed, 22 Feb 2023, Giovanni Bechis via mailop wrote: this would not work for me, on my servers ~6% of imap logins are from bots. *Successful* IMAP logins ? -- Andrew C. Aitchison

[mailop] Outgoing filtering Re: Cyren

2023-02-03 Thread Andrew C Aitchison via mailop
email account providers would filter their outgoing mail too, there would be significantly less spam. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org

Re: [mailop] [External] Re: verizon email-to-text gateway mail deferred evening and night

2023-01-08 Thread Andrew C Aitchison via mailop
On Sun, 8 Jan 2023, Andrew C Aitchison via mailop wrote: On Sun, 7 Jan 2023, John Levine via mailop wrote: But more to the point, why do you care? The number of phones these days that can get SMS but not email rounds to zero, so if someone wants to send you mail, they can send you mail

Re: [mailop] [External] Re: verizon email-to-text gateway mail deferred evening and night

2023-01-08 Thread Andrew C Aitchison via mailop
had a reputation for stronger security and privacy than email. I don't know how much that reputation was or is deserved. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop

Re: [mailop] verizon email-to-text gateway mail deferred evening and night

2023-01-07 Thread Andrew C Aitchison via mailop
On Sat, 6 Jan 2023, John Levine via mailop wrote: If it's not worth 1c to get your messages out, perhaps this would be a good time to reconsider why exactly you're sending them in the first place. If only we could say that to spammers. -- Andrew C. Aitchison Kendal, UK

Re: [mailop] IBM: [to unsubscribe] please enter your first, last name, email and country

2022-12-07 Thread Andrew C Aitchison via mailop
to unsubscribe just by clicking "Confirm" or something like this on the page you get to via the link - as many legitimate newsletters already do. Hmm. This list has two unsubscribe links (https: and mailto:) but neither is personalised. -- Andrew C. Aitchison

Re: [mailop] SPF (and other email security protocols) Survey

2022-11-24 Thread Andrew C Aitchison via mailop
of my wife's practiced alternative medicine for many years before starting a PhD in that area. If VT PhD students don't have the experience needed in the topics they study, then shouldn't VT change either the students or the topics ? -- Andrew C. Aitchison Kendal, UK

Re: [mailop] Google Translate provide spammer and phishing reputation

2022-11-10 Thread Andrew C Aitchison via mailop
s anyone have access to proofpoint urldefence.com and similar to see what they do ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

[mailop] SPFBL - was Re: Recommendations for host with good IP reputation or use external SMTP?

2022-10-31 Thread Andrew C Aitchison via mailop
C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] blocking t-online.de in OpenSMTPD

2022-10-23 Thread Andrew C Aitchison via mailop
of this public list. The content of that regex might need to be expanded to include other reverse domains they use. Thanks to Florian Obser for pointing out the errors in my first run at this. --lyndon Thanks, -- Andrew C. Aitchison Kendal, UK an

Re: [mailop] T-Online is now really blocking messages from non-commercial and simliar senders

2022-10-20 Thread Andrew C Aitchison via mailop
we believe the recipient will not be able to reply to T-Online senders. But of course, sending a clear and accurate reject or bounce message to T-Online is no guarantee that it will reach the sender. -- Andrew C. Aitchison Kendal, UK and...@aitch

Re: [mailop] Gmail as well as Google Worskapce refuse all email from my domain

2022-10-02 Thread Andrew C Aitchison via mailop
lem and they have an incentive to a) get google to accept mail from o365 and b) keep the flow from o365 to gmail clean enough the Google don't block you again. I don't need your answers to the above questions. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me

Re: [mailop] gmail: Benefit of a generic SPF-record?

2022-09-30 Thread Andrew C Aitchison via mailop
default = spam. If you send 100 messages and one is marked "not spam", your score becomes spam/not-spam 0/1 -> not-spam. Plausible ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk __

Re: [mailop] two openssl (in OpenDKIM) questions for the masses

2022-09-20 Thread Andrew C Aitchison via mailop
. (Exim, as shipped by the Exim team, appears to use OpenDMARC but not OpenDKIM). -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo

[mailop] Exchange (and GSuite?) versus open source - was Re: The oligopoly has won.

2022-09-14 Thread Andrew C Aitchison via mailop
as I can see Exchange does some calendaring which only works with Outlook and which has always looked like the tail wagging the dog from my perspective (why would I change my entire mail system to use a calendaring system ?). -- Andrew C. Aitchison Kendal, UK

Re: [mailop] The oligopoly has won.

2022-09-13 Thread Andrew C Aitchison via mailop
oken would confirm that the message sent and the message received are the same, but I don't see what would be gained by attaching the token to a new message - using the URL directly would be a more efficient way of triggering the denial of service attack *on the original message*. -- Andrew C.

Re: [mailop] SMTP noise from *.bouncer.cloud

2022-09-05 Thread Andrew C Aitchison via mailop
of their completed form. If this bounces, then you ask them to correct the address. Of course, if they give *someone-elses* email (whether by accident or deliberately) you have just mailed personal data to a third party ... -- Andrew C. Aitchison

Re: [mailop] SMTP noise from *.bouncer.cloud

2022-09-04 Thread Andrew C Aitchison via mailop
@ not personal data in GDPR terms, in principle would you be happy to do that ? Coincidentally, I have just been helping someone enable SMTP VRFY in exim. I suppose that you do use VRFY when it is availble ? -- Andrew C. Aitchison Kendal, UK

Re: [mailop] Microsoft Office365 blocking non Oauth2 authentication on IMAP and SMTP.

2022-08-19 Thread Andrew C Aitchison via mailop
they won't re-enable tokenless authentication and the provide no help at all to get tools back online which do not work any more. I wonder: How do other Microsoft Office365 customers mitigate this situation? -- Andrew C. Aitchison

Re: [mailop] Disabling TLS 1.0 and 1.1 for MTA to MTA communication

2022-08-04 Thread Andrew C Aitchison via mailop
is that v1.2 might share those flaws even if v1.3 does not). -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] Disabling TLS 1.0 and 1.1 for MTA to MTA communication

2022-08-03 Thread Andrew C Aitchison via mailop
ant. IIUC the "No STARTTLS" people have found that, when connecting a TLS library to application code, allowing connections to be upgraded from clear to encrypted produces many more bugs than just requiring the connection to be secure from the start. -- Andrew C. Aitchison

Re: [mailop] Disabling TLS 1.0 and 1.1 for MTA to MTA communication

2022-08-03 Thread Andrew C Aitchison via mailop
on my side… their choices were just a tad dusty… Long ago I has a support ticket from a user visiting a four letter national security centre complaining that he could not ssh to our department. Translated, the error message we were giving was "your codes are too old". That made

Re: [mailop] HR 8160 and SB 4409: The "You're not allowed to run political campaign email through your spam filter" act

2022-07-30 Thread Andrew C Aitchison via mailop
lly. Yes, but anyone providing email services for large companies may have to keep an eye open. For example those parameters mean that Boeing, or anyone filtering email for Boeing has to engage with the bill, but Barracuda doesn't have to except when acting for particularly large companies. -

Re: [mailop] Weirdly formatted messages from AOL Webmail or Yahoo

2022-07-26 Thread Andrew C Aitchison via mailop
? RFC6532 limits lines to 998 octets. There is a view that this is out of date and many mail senders do not stick to this limit, but equally some receiving systems attempt to enforce it. 998 octets is a MUST; there is also a 78 character SHOULD limit. -- Andrew C. Aitchison Kendal, UK

Re: [mailop] So, Sendgrid / Zoom, planning on actually doing anything about webinar spams?

2022-07-21 Thread Andrew C Aitchison via mailop
, there is at least one legitimate reasons to allow this: how else could a customer change ESP ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org

Re: [mailop] Google's Request to the FEC about Allowing Political Email to Bypass Spam Filtering

2022-07-10 Thread Andrew C Aitchison via mailop
' tab, just like the 'Promotions' tab. Wouldn't that be labelling, which would mean they need explict permission before enabling it for each user ? -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk

Re: [mailop] opendkim replacement

2022-07-04 Thread Andrew C Aitchison via mailop
On Mon, 4 Jul 2022, Edwardo Garcia via mailop wrote: Halo, What are we using this days in replace opendkim which is long broken abandonware? For anyone using Exim, there is builtin support (in and out) which does not use opendkim. -- Andrew C. Aitchison Kendal, UK

Re: [mailop] Interesting question from a team member, MX chaining, list-manage.com

2022-07-01 Thread Andrew C Aitchison via mailop
. AND no record. Otherwise, if there is no MX record but there is A record, mail will be delivered to the mailserver A record points to. Of course assuming that there is a mailserver on that machine that listens on port 25... -- Andrew C. Aitchison Kendal, UK

[mailop] NULL MX - was Re: Interesting question from a team member, MX chaining, list-manage.com

2022-07-01 Thread Andrew C Aitchison via mailop
at "proposed") documented using pref=0, zero-length label '.' and describes some performance benefits. I see that example.com uses this. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop ma

Re: [mailop] gmail changes today?

2022-06-11 Thread Andrew C Aitchison via mailop
Ls (or the domains of URLs) from manually marked spam. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] How to contact ClamAVNet support

2022-06-03 Thread Andrew C Aitchison via mailop
, but that means they have no paying customers to prioritize. They are part of Cisco. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https

Re: [mailop] Talking DOXING of spammers on this mailing list..

2022-06-02 Thread Andrew C Aitchison via mailop
password. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] How "more secure" is actually less secure (regarding Gmail)

2022-05-30 Thread Andrew C Aitchison via mailop
ready to send the first message of the session. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] forwarding to gmail - problem

2022-05-08 Thread Andrew C Aitchison via mailop
. And Brandon just said (IIUC) that GMail POP collection doesn't (yet) support OAUTH2, so one of the sensible ways of making them different is not available. If your organisation has single sign on that may mean that google has access to your file server :-( -- Andrew C. Aitchison

Re: [mailop] forwarding to gmail - problem

2022-05-06 Thread Andrew C Aitchison via mailop
is an instant messaging system :-( Agreed. -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop

Re: [mailop] forwarding to gmail - problem

2022-05-06 Thread Andrew C Aitchison via mailop
would hope that the forwarder would get some credit for making the details of the previous hop sufficiently reliable to score. If so, then it is useful to ARC-sign a message when forwarding, even when we have no data upon which to evalate incoming ARC signatures. -- Andrew C. Aitchison

Re: [mailop] forwarding to gmail - problem

2022-04-29 Thread Andrew C Aitchison via mailop
On Fri, 29 Apr 2022, Jaroslaw Rafa via mailop wrote: Dnia 29.04.2022 o godz. 12:08:13 Andrew C Aitchison via mailop pisze: You wouldn't want to give anybody - be it Google or anybody else - login credentials to your email account, would you? In many organisations it is worse than

Re: [mailop] forwarding to gmail - problem

2022-04-29 Thread Andrew C Aitchison via mailop
only valid for popping mail, without adding an extra password and confusing everyone. Not to mention the risks of letting "Google" see possibly confidential emails. -- Andrew C. Aitchison Kendal, UK an

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