Re: [mailop] Recommendations for mail campaign services

2021-05-06 Thread Simplelists - Andrew Beverley via mailop
> I'm working with a non-profit company that would like to use an e-mail 
> campaign system.

I spent a while evaluating a few of these for a local non-profit group.
I eventually settled on https://emailoctopus.com/

I'm really pleased with it: it works well and has a nice user interface.
Having used Mailchimp before, I consider EmailOctopus to have a slicker
user interface and I also found it more responsive as a web application.

Andy
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Re: [mailop] Problems with Proofpoint?

2021-01-27 Thread Simplelists - Andrew Beverley via mailop
On Wed, 27 Jan 2021 14:24:17 -0700 Jaren Angerbauer wrote:
> Got your first email this morning :)
> 
> Will respond to you in a bit.

Brilliant, thanks Jaren. Sorry, I didn't want to assume you were on
standby for an instant response ;-)

Andy
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[mailop] Problems with Proofpoint?

2021-01-27 Thread Simplelists - Andrew Beverley via mailop
Hi,

Is anyone else seeing any problems delivering to domains hosted at
Proofpoint?

We're seeing most (but not all) of our emails deferred, with a message
to check the sending IP address at ipcheck.proofpoint.com. When we do
that, the IP addresses are reported as not blocked.

E.g.

status=deferred (host mx0a-0016c301.pphosted.com[67.231.148.70] refused
to talk to me: 421 Deferred - see
https://ipcheck.proofpoint.com/?ip=78.143.254.171)

I've contacted postmas...@proofpoint.com and also the recipient
customer has contacted them, but just wondering whether this is a
general issue or just us.

The sending IP addresses in question are 78.143.254.171-174

Thanks,

Andy
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[mailop] Contact at qq.com / Tencent

2021-01-05 Thread Simplelists - Andrew Beverley via mailop
A bit of a long shot, but does anyone have a contact at qq.com /
Tencent Mail?

We moved outbound IP address a few months ago, and the only provider
that we are still needing to deliver to using the old IP addresses is
qq.com, which is rate-limiting the new range with the messages:

"550 Ip frequency limited" and "550 Sender frequency limited"

Thanks,

Andy
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Re: [mailop] Looking for possible mailing list hosting

2020-12-16 Thread Simplelists - Andrew Beverley via mailop
On Wed, 16 Dec 2020 11:04:04 -0500 Dave Shevett wrote:
> Does anyone know of a hosting company that uses mailman (or something
> roughly equivalent) and doesn't cost an arm and a leg?  We're a social
> community that uses the mailing list for internal dicusssions - this
> isn't customer facing stuff.
> 
> We're looking at groups.io as well - any other suggestions?

Shameless plug for Simplelists.com ;-)

Message me off-list if you have any specific questions.

Andy
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[mailop] Rackspace point of contact

2020-06-15 Thread Simplelists - Andrew Beverley via mailop
Dear all,

Is there anyone that can help with a Rackspace delivery problem please?

We're moving IP addresses and are having trouble with getting anything
other than a tiny trickle of email delivered from the new IP space
(78.143.254.0/24). I've tried postmas...@emailsrvr.com but have
received no response from 2 emails sent last week.

Many thanks,

Andy

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Re: [mailop] t-online.de outage?

2020-06-09 Thread Simplelists - Andrew Beverley via mailop
On Tue, 9 Jun 2020 11:13:34 -0500 Al Iverson via mailop wrote:
> Anybody else who is bored, feel free to share your telnet test
> results

From the very same server, I get different results depending on which
local IP address I bind to. If I bind to an IP address which regularly
sends email (89.16.184.172) then it connects fine, but if I connect
from an IP address that never normally sends email (89.16.162.4), then I
get the same error message that others are reporting.

Andy

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Re: [mailop] Which ESP forces double opt in?

2020-06-08 Thread Simplelists - Andrew Beverley via mailop
On Mon, 08 Jun 2020 09:28:27 + mailop@mailop.org wrote:
> Which ESP does 100% (double/confirmed) opt in?

We do by default. We then allow a customer to request that the opt-in
requirement be relaxed. Of course, we can't guarantee that what a
customer tells us is true when we process this request.

We do send on different IP addresses though per email address,
depending on whether the recipient has opted in via us (and then we mark
that as such in the SuretyMail IADB entry).

Andy

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Re: [mailop] Suggestions for VPS providers in Europe?

2019-12-03 Thread Andrew Beverley via mailop
On 2 Dec 2019 18:59:09 -0500 John Levine wrote:
> I warned a guy away from Hetzner and OVH if he wants to send mail so
> he reasonably asked what VPS provider in Europe is better for sending
> mail.
> 
> Any suggestions?

Previously I would have said Bytemark (who we currently still use), but
the company has recently been sold and things aren't looking so rosy
(not to say that things will get worse for sending email though).

I would also recommend Mythic Beasts. We only used them to send a low
volume of email, but never had problems and technically they are a
capable bunch who I imagine would care about abuse.

Andy

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Re: [mailop] Moving to a new outbound IP range

2019-07-03 Thread Simplelists - Andrew Beverley via mailop
On Wed, 03 Jul 2019 22:52:21 +0800 Philip Paeps via mailop wrote:
> The factory that made IPv4 addresses has been closed for a while.  They 
> don't make new IPv4 addresses any longer.  I don't believe "completely 
> clean" IPv4 address space exists anywhere.  Certainly in the RIPE 
> region, all you're going to get is returned address space.
> 
> I think "the devil you know" might be the better option.  RIPE NCC will 
> assign you whatever allocation is next, which may have once been 
> hijacked or otherwise unsanitary.  You have no way to know.  If you're 
> transferring space from a broker, you can do at least some due 
> diligence.
> 
> Whichever option you go for ... you'll have to ramp it up slowly.  Even 
> if the block you get allocated has inexplicably never been seen to send 
> email before, the absence of a reputation is also a reputation in the 
> benighted times we live in.

Thanks for the comprehensive advice Philip - much appreciated. I'll see
what's available.

Andy

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Re: [mailop] Moving to a new outbound IP range

2019-07-01 Thread Simplelists - Andrew Beverley via mailop
On Mon, 1 Jul 2019 18:20:00 +0100 Stuart Henderson wrote:
> I don't think it's likely to matter that much really (and either way
> you'll still have the challenge of building up positive reputation for
> the addresses). You can show the whois entry showing the new assignment
> if you need to contact anybody asking them to clear an old RBL entry etc.
> 
> If there are non mail-delivery related reasons factored into the choice
> too then I would probably let those guide the decision..

Great, thanks for the reply and advice.

Andy

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Re: [mailop] Moving to a new outbound IP range

2019-07-01 Thread Simplelists - Andrew Beverley via mailop
Thanks for the replies,

On Mon, 1 Jul 2019 17:19:41 +0100 Stuart Henderson wrote:
> Though AFAIK it's too late for brand-new space in the RIPE region,
> I think they're just reallocating reclaimed address space now.

Ah, if that's the case (I'll check) would it be safer to use a known
range? Presumably we wouldn't know what new range had been issued until
it arrived.

Andy

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Re: [mailop] Moving to a new outbound IP range

2019-07-01 Thread Simplelists - Andrew Beverley via mailop
On Mon, 1 Jul 2019 14:19:03 +0100 (BST) Andrew C Aitchison wrote:
> On Mon, 1 Jul 2019, Simplelists - Andrew Beverley via mailop wrote:
> > Dear all,
> >
> > I'm after some general advice about moving to a new outbound email IP
> > address range.
> >
> > We have a choice of either applying for a brand new range from RIPE
> > (which has presumably never been used before to send email), or buying
> > an existing block that may have been used.
> >
> > Would it be better to go for the brand new block? Obviously any
> > existing block could be checked in DNSBLs etc, but are there any
> > advantages of using an existing block?
> 
> Are they both IPv4 ? Both IPv6 ?

Both IPv4.

Andy

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[mailop] Moving to a new outbound IP range

2019-07-01 Thread Simplelists - Andrew Beverley via mailop
Dear all,

I'm after some general advice about moving to a new outbound email IP
address range.

We have a choice of either applying for a brand new range from RIPE
(which has presumably never been used before to send email), or buying
an existing block that may have been used.

Would it be better to go for the brand new block? Obviously any
existing block could be checked in DNSBLs etc, but are there any
advantages of using an existing block?

Thanks,

Andy

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Re: [mailop] Outlook/Hotmail reporting to us that a mail has been declared as SPAM by a recpient, but... ?

2019-06-28 Thread Simplelists - Andrew Beverley via mailop
On Fri, 28 Jun 2019 07:52:08 + Sébastien Riccio wrote:
> So we forwarded the information to the sender for their information.
> Their recipient replied to our customer they did not flagged this
> message as SPAM at all and that only one message was in their spambox
> and it went there automatically.
> 
> Aren't feedback loops reporting manual « Mark as spam » only ? Just
> trying to figure out what is going on here.

We've seen this a few times. We've come to the conclusion that it's
either anti-spam software on the local computer that is automatically
moving the email into the user's spam folder (and thus marking it as
spam), or the users are accidentally doing it themselves without
realising it. I'm pretty sure it's not happening at the provider's end.

Andy


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Re: [mailop] Contact at cox.net

2019-06-10 Thread Simplelists - Andrew Beverley via mailop
Replied off-list.

Andy


On Fri, 7 Jun 2019 13:00:48 +1000
Mark Dale via mailop  wrote:

> 
> Hi Andy,
> 
> Do you have a contact at Cox? We haven't had any response from their
> postmaster address.
> 
> Regards,
> Mark
> 
>  Original Message ----
> From: Simplelists - Andrew Beverley [mailto:a...@simplelists.com]
> Sent: Thursday, June 6, 2019, 11:28 PM UTC
> To: m...@mailmanlists.net
> Cc: Mark Dale via mailop
> Subject: [mailop] Contact at cox.net
> 
> > Mark, James,
> > 
> > Sorry for not replying before - I had some very-useful off-list
> > assistance, and am pleased to report that the issue is now resolved.
> > I'll let them make contact as required.
> > 
> > Regards,
> > 
> > Andy
> > 
> > 
> > On Fri, 7 Jun 2019 08:31:12 +1000
> > Mark Dale via mailop  wrote:
> > 
> >> Hi,
> >>
> >> Was the issue with cox.net resolved? We're seeing the same error applied
> >> at seemingly random intervals. It popped up last week then again yesterday.
> >>
> >> Best,
> >> Mark
> >>
> >>
> >>
> >> On 6/6/19 10:38 pm, James Hoddinott via mailop wrote:
> >>> What IP(s) are you sending from? Not promising anything but I might be
> >>> able to dig in to the data and see if anything useful can be found
> >>> related to your sends.
> >>>
> >>> On Fri, 31 May 2019 at 08:25, Simplelists - Andrew Beverley via mailop
> >>> mailto:mailop@mailop.org>> wrote:
> >>>
> >>> Hi,
> >>>
> >>> Does anyone have any contacts at cox.net <http://cox.net> please? We
> >>> are seeing 452
> >>> error code CXMXRT when trying to deliver (meaning "The email sender 
> >>> has
> >>> exceeded the maximum number of sent email allowed"), despite 
> >>> throttling
> >>> delivery down to 1 email every 12 seconds.
> >>>
> >>> Many thanks,
> >>>
> >>> Andy
> >>>
> >>> ___
> >>> mailop mailing list
> >>> mailop@mailop.org <mailto:mailop@mailop.org>
> >>> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
> >>>
> >>>
> >>> ___
> >>> mailop mailing list
> >>> mailop@mailop.org
> >>> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
> >>>
> >>
> >> ___
> >> mailop mailing list
> >> mailop@mailop.org
> >> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
> > 
> > 
> 
> ___
> mailop mailing list
> mailop@mailop.org
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Re: [mailop] Contact at cox.net

2019-06-06 Thread Simplelists - Andrew Beverley via mailop
Mark, James,

Sorry for not replying before - I had some very-useful off-list
assistance, and am pleased to report that the issue is now resolved.
I'll let them make contact as required.

Regards,

Andy


On Fri, 7 Jun 2019 08:31:12 +1000
Mark Dale via mailop  wrote:

> Hi,
> 
> Was the issue with cox.net resolved? We're seeing the same error applied
> at seemingly random intervals. It popped up last week then again yesterday.
> 
> Best,
> Mark
> 
> 
> 
> On 6/6/19 10:38 pm, James Hoddinott via mailop wrote:
> > What IP(s) are you sending from? Not promising anything but I might be
> > able to dig in to the data and see if anything useful can be found
> > related to your sends.
> > 
> > On Fri, 31 May 2019 at 08:25, Simplelists - Andrew Beverley via mailop
> > mailto:mailop@mailop.org>> wrote:
> > 
> > Hi,
> > 
> > Does anyone have any contacts at cox.net <http://cox.net> please? We
> > are seeing 452
> > error code CXMXRT when trying to deliver (meaning "The email sender has
> > exceeded the maximum number of sent email allowed"), despite throttling
> > delivery down to 1 email every 12 seconds.
> > 
> > Many thanks,
> > 
> > Andy
> > 
> > ___
> > mailop mailing list
> > mailop@mailop.org <mailto:mailop@mailop.org>
> > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
> > 
> > 
> > ___
> > mailop mailing list
> > mailop@mailop.org
> > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
> > 
> 
> ___
> mailop mailing list
> mailop@mailop.org
> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop


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Re: [mailop] What is the story with QQ.COM?

2019-06-03 Thread Andrew Beverley via mailop
On Sat, 1 Jun 2019 03:17:32 -0700 Brian Kantor via mailop wrote:
> For the past several months, one of the mailboxes on one of my
> servers has been getting messages, mostly in Chinese character sets
> that I can't decipher, short little messages from various senders
> with FROM addresses like 123456...@qq.com.  At least a thousand a
> day, sometimes as many as 2500 or more in one 24-hour period.

We've had this problem too. We've ended up blocking @qq.com email
addresses entirely, and haven't had any complaints (and we do have at
least one customer in China).

Andy

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[mailop] Contact at cox.net

2019-05-31 Thread Simplelists - Andrew Beverley via mailop
Hi,

Does anyone have any contacts at cox.net please? We are seeing 452
error code CXMXRT when trying to deliver (meaning "The email sender has
exceeded the maximum number of sent email allowed"), despite throttling
delivery down to 1 email every 12 seconds.

Many thanks,

Andy

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[mailop] Contact at tds.net

2019-04-24 Thread Simplelists - Andrew Beverley
Hi,

Is there anyone here who can help with delivery problems to tds.net?

I have tried postmas...@tds.net but I get:

  postmas...@tds.net (reading confirmation): 554 5.4.6 mail loop detected

And their online forms seem to be orientated towards their own users.

Thanks,

Andy

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Re: [mailop] Our customers e-mail constantly going to outlook.com junkmail (any Microsoft people around?)

2019-04-22 Thread Simplelists - Andrew Beverley
Hi Michael,

On Thu, 18 Apr 2019 20:06:41 + Michael Wise wrote:
> The one guaranteed way to get traffic delivered to the INBOX is for
> the recipient to SafeSender the domains.

Just to clarify, does this have to be the domain in the RFC822-From
address? Or can it be another header such as return-path or sender?

I'm just thinking in the case of a mailing list, whether the recipient
could white-list all list emails using the domain in the return-path, or
whether they would have to white-list all individual domains that post
to the list (assuming it hasn't been rewritten of course).

Thanks,

Andy

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Re: [mailop] Unsubscription requests from O365

2018-08-08 Thread Andrew Beverley
Sorry... I think it might actually be a problem this end. There are
some additional parameters that can be added to the URL which means it
doesn't require a POST request. I'm not sure how, but the scanner
appears to be adding these. I can't see the parameters in a list email
anywhere, so I'm not sure where it's getting them from, but that's our
problem not yours. Sorry for the noise.

Andy



On Wed, 8 Aug 2018 22:57:37 +
Michael Wise  wrote:

> 
> 
> "Hmm...[tm]"
> 
> 
> 
> Making inquiries.
> 
> Aloha,
> Michael.
> --
> Michael J Wise
> Microsoft Corporation| Spam Analysis
> "Your Spam Specimen Has Been Processed."
> Got the Junk Mail Reporting 
> Tool<http://www.microsoft.com/en-us/download/details.aspx?id=18275> ?
> 
> 
> 
> -Original Message-
> From: Andrew Beverley 
> Sent: Wednesday, August 8, 2018 3:55 PM
> To: Michael Wise 
> Cc: mailop@mailop.org
> Subject: Re: [mailop] Unsubscription requests from O365
> 
> 
> 
> Thanks for the quick reply Michael,
> 
> 
> 
> > Does the URL include the user identifier as part of the domain or path?
> 
> 
> 
> No, it's in the query string, e.g.
> 
> 
> 
> https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.simplelists.com%2Fconfirm.php%3Fu%3DQzwKTj9iXcEWOT1I5MQObv4l7aPma9tN&data=02%7C01%7CMichael.Wise%40microsoft.com%7C7bbb4374adfa43bdee9708d5fd81cf97%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636693656336439282&sdata=%2BlJKT00gN7bqsgTUyhU0QO2CCR2HAXLneSNFNFEz%2FW8%3D&reserved=0
> 
> 
> 
> > This is our SONAR system testing if the URL is malicious.
> 
> 
> 
> But surely it shouldn't be doing POST requests to test the URL? It's only the 
> last 24 hours or so that this has suddenly become a problem - it was okay 
> before that.
> 
> 
> 
> > Or, you could just block the IP ranges that you see this behavior
> 
> > coming from, as I recall they’re all in a /24 or thereabouts.
> 
> 
> 
> Thanks, that's a good option - I guess genuine requests will be from a 
> different IP range. It looks like a bit more than a /24 but not much more 
> (about 40.107.194.0 - 40.107.248.99 or so).
> 
> 
> 
> Thanks,
> 
> 
> 
> Andy


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Re: [mailop] Unsubscription requests from O365

2018-08-08 Thread Andrew Beverley
Thanks for the quick reply Michael,

> Does the URL include the user identifier as part of the domain or path?

No, it's in the query string, e.g.

https://www.simplelists.com/confirm.php?u=QzwKTj9iXcEWOT1I5MQObv4l7aPma9tN

> This is our SONAR system testing if the URL is malicious.

But surely it shouldn't be doing POST requests to test the URL? It's
only the last 24 hours or so that this has suddenly become a problem -
it was okay before that.

> Or, you could just block the IP ranges that you see this behavior
> coming from, as I recall they’re all in a /24 or thereabouts.

Thanks, that's a good option - I guess genuine requests will be from a
different IP range. It looks like a bit more than a /24 but not much
more (about 40.107.194.0 - 40.107.248.99 or so).

Thanks,

Andy

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[mailop] Unsubscription requests from O365

2018-08-08 Thread Andrew Beverley
We are seeing a large increase in the number of list unsubscriptions
from O365-hosted email addresses, using the List-Unsubscribe header.

Has anyone else noticed this and/or is anyone aware of any problems? Or
has a new "easy" unsubscribe feature been added? Apparently many of the
unsubscriptions are unintended by the list member in question.

The unsubscriptions seem to happen almost as soon as a list email is
distributed, so they look automated rather than the accidental action
of members.

The list-unsubscribe URL in question requires a POST request to action
it (there is also an associated RFC8058 List-Unsubscribe-Post header).

Thanks,

Andy

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[mailop] Rackspace point of contact

2017-11-22 Thread Andrew Beverley
Is there anyone that can help with a Rackspace delivery problem please?
I'm getting very little from their support department (via postmaster@)

Thanks,

Andy

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[mailop] Rate-limiting at RoadRunner

2017-07-07 Thread Andrew Beverley
Hi,

Is there anyone here from RoadRunner who can help with rate limiting?
We are seeing a lot of "452 Too many recipients received this hour"
when trying to deliver to cdptpa-pub-iedge-vip.email.rr.com.

According to http://postmaster.rr.com/spam#ratelimit the recommended
way to fix this (amongst other standard best practice) is to set up
an FBL and get white-listed with ReturnPath.

I've tried the FBL. The previous one we had appears to have been
suspended, and there has been no response so far to a request for a new
one. ReturnPath is not an option as it's prohibitively expensive.

Thanks,

Andy
-- 
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Re: [mailop] UOL Spam Compliant Format

2017-04-18 Thread Andrew Beverley
On Tue, 18 Apr 2017 09:59:29 +0200 David Hofstee wrote:
> * I have seen people press the spam button mere minutes after filling
> in the subscribe form which was as clear as can be. Subscribers
> sometimes just can't find the unsubscribe link, forgot they opted in,
> sometimes the translation of the button becomes 'unwanted email',
> people think the spam button is appropriate for all marketing email
> even though they opted in or they just don't care.

I have seen people continuously submit a complaint, get removed, and
then resubscribe. They then complain that they keep getting removed
from the mailing list, and are adamant that they are not making
complaints.

I'd be interested to hear other people's opinions, but the best theory
I have come up with is that anti-spam software on the user's PC is
incorrectly identifying the message as spam, moving it to the spam
folder of the mailbox, and that is generating the FBL complaint.

Andy

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Re: [mailop] Junking at Office365

2017-01-18 Thread Andrew Beverley
Hello Mounir,

On Wed, 18 Jan 2017 Mounir el Hahaoui wrote:
> We have seen an increasing number of reports about junking at
> Office365 from different senders. These customers have an engaged
> userbase and rarely experienced deliverability issues before. All
> best practices are applied and all technical requirements are set and
> validated correctly, like SPF, DKIM and DMARC.
> 
> Despite all off this, for some reason the following error is shown in
> the email client: The sender failed our fraud detection checks and
> may not be who they appear to be.

This excellent blog will explain the reasons why, and gives options to
resolve:

https://blogs.msdn.microsoft.com/tzink/2016/11/02/troubleshooting-the-red-suspicious-safety-tip-for-fraud-detection-checks/

Andy

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[mailop] Sporadic delivery to icloud.com

2017-01-06 Thread Andrew Beverley
Is there anyone here from icloud.com that can help with some rather
sporadic delivery to user's mailboxes?

Thanks,

Andy

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Re: [mailop] Outlook.com and fraud detection checks

2016-11-14 Thread Andrew Beverley
On Tue, 8 Nov 2016 17:29:48 Andrew Beverley  wrote:
> I've received a couple of reports recently of outlook.com prepending
> the following message to list emails:
> 
>   This sender failed our fraud detection checks and may not be who
>   they appear to be. Learn about spoofing http://aka.ms/LearnAboutSpoofing

Thanks for everyone's replies regarding this, especially Terry's blog,
which is excellent.

Although I was initially told by multiple customers that they were
seeing the warning on multiple recipient domains, none have actually
provided me with any evidence of this, so I believe it is the "mailing
list scenario" as described in the blog.

It's less of an issue now that I know it is only the original sender
seeing the warning, although it would still be nice to remove it, so
I'll be looking through the recommendations.

Thanks again,

Andy

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Re: [mailop] Outlook.com and fraud detection checks

2016-11-08 Thread Andrew Beverley
Hi Ken,

> Any chance you could post an example (with full headers)?

I haven't been able to reproduce this myself, so I'll try and get an
example from a user and then post it here.

Thanks,

Andy

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[mailop] Outlook.com and fraud detection checks

2016-11-08 Thread Andrew Beverley
Dear all,

I've received a couple of reports recently of outlook.com prepending
the following message to list emails:

  This sender failed our fraud detection checks and may not be who they
  appear to be. Learn about spoofing http://aka.ms/LearnAboutSpoofing

I've checked that link, which suggests it could be because of a
misleading link in the email, but there are no links in the emails that
I looked at.

It looks like the warning message has been around for a while, but it
seems like it is now being added to email list messages that are both
sent and received from an outlook.com hosted domain.

I assumed initially that it was something to do with DMARC, but for
both instances the sender did not have a DMARC record.

Does anybody know what causes it and whether there is any way to
prevent it?

The email list messages in question have all the normal headers
rewritten, except the "from" header, which only gets rewritten on the
presence of a suitable DMARC record.

Thanks,

Andy

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Re: [mailop] Yahoo contact for FBL reports

2016-10-30 Thread Andrew Beverley
On 30 Oct 2016 17:29:48 - "John Levine"  wrote:
> >content and then sent from another host. This breaks the DKIM
> >signature of course, but the reports are being sent nonetheless.
> >
> >Is this to be expected and is there anything I can do about it, or
> >could I be missing something?
> 
> I've gotten lots of reports with broken signatures, typically real
> messages that have gone through mailing lists.  I don't think you're
> seeing anything unusual from Y! here.
> 
> They certainly know that the signatures are broken, but perhaps
> they figure you'd be interested in them anyway.

Thanks John, good to hear.

Andy

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Re: [mailop] Yahoo contact for FBL reports

2016-10-29 Thread Andrew Beverley
On Fri, 28 Oct 2016 08:56:55 Laura Atkins  wrote:
> The key here (I *think*) is that the passing DKIM header is signed by
> Yahoo. So Yahoo verified the signature. Because it’s a Yahoo
> verification, Yahoo trusts it to be right. 
> 
> I dunno what’s going on under the covers. But those headers look to
> me like someone is playing silly buggers with replay-like attacks.
> You’re going to need get one of the folks who really understands DKIM
> and Yahoo’s implementation to better understand it. 

I see, thanks.

> Is this hurting your delivery or are you just getting the reports?

I don't think it's a problem, I was just slightly concerned to be
receiving a load of reports for mail that I couldn't identify. There
did seem to be a slight dip in our IP address reputations, but that may
have just been a coincidence.

> Also, I’d unsubscribe the original recipient.

Thanks, I've done that.

Andy

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Re: [mailop] Yahoo contact for FBL reports

2016-10-28 Thread Andrew Beverley
On Thu, 27 Oct 2016 15:44:15 Laura Atkins  wrote:
> I know that Yahoo will send FBLs to forwarded messages to the
> originator. Looks like this is one of the “side effects” of that.

I see, thanks. So the spammer is trying to make it look like a
forwarded message, so that even though it fails DKIM, it still might
increase the chance of it passing filters. Correct?

Andy

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Re: [mailop] Yahoo contact for FBL reports

2016-10-27 Thread Andrew Beverley
On Thu, 27 Oct 2016 14:44:12 Laura Atkins  wrote:
> >> As far as I'm aware DKIM and/or DomainKeys needs to pass for Yahoo
> >> to allow the complaint to be processed back to the PRA domain's
> >> complaint feed.
> > 
> > That's what I assumed, which was why I was worried I might be
> > missing something.
> 
> DKIM seems to authenticating, at least in this sample:
> 
>  mta1057.sbc.mail.bf1.yahoo.com  from=simplelists.com;
> domainkeys=neutral (no sig);  from=simplelists.com; dkim=pass (ok)

Thanks Laura. I *think* that's the original authentication header
though, from the genuine email that was originally sent from our
service. The original genuine email then appears to have had spam
inserted and resent, which then appears to result in the second
authentication header that fails.

Andy

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Re: [mailop] Yahoo contact for FBL reports

2016-10-27 Thread Andrew Beverley
On Thu, 27 Oct 2016 21:09:57 Andrew Wingle  wrote:
> If you could provide header samples it would be helpful here.

Thanks for the reply Andrew, much appreciated. I've copied below.

> As far as I'm aware DKIM and/or DomainKeys needs to pass for Yahoo to
> allow the complaint to be processed back to the PRA domain's complaint
> feed.

That's what I assumed, which was why I was worried I might be missing
something.



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Re: [mailop] Yahoo contact for FBL reports

2016-10-27 Thread Andrew Beverley
On Thu, 27 Oct 2016 18:11:40 +0100 Andrew Beverley wrote:
> Is there anyone from Yahoo here, who could contact me regarding
> unusual FBL reports I'm receiving please?

Maybe I should ask my question here:

We've been getting a lot of Yahoo FBL reports for what appear to be
forged emails. The emails are loosely based on ones that have been sent
from our service, but have then been altered to insert a lot of spam
content and then sent from another host. This breaks the DKIM
signature of course, but the reports are being sent nonetheless.

Is this to be expected and is there anything I can do about it, or
could I be missing something?

Andy

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[mailop] Yahoo contact for FBL reports

2016-10-27 Thread Andrew Beverley
Hi,

Is there anyone from Yahoo here, who could contact me regarding
unusual FBL reports I'm receiving please?

Thanks,

Andy

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