[mailop] Microsoft 365 IP addresses listed on Spamcop
Hello all, I am attempting to send mail from a M365 tenancy, however, we are seeing issues with it being filtered due to the address appearing on bl.spamcop.net. "Decision Engine classified the mail item was rejected because of IP Block (from outbound normal IP pools) -> 550 mail from 40.107.107.97 refused, see http://www.spamcop.net - Your mail provider is blocked because is sending SPAM." If there is anyone on-list from Microsoft, could you please take a look? It's causing issues š Thanks, Christopher Hawker ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Extortion spam from OVH-hosted *.sbs domains
If the abuse contact (ab...@ovh.net) is not responding to e-mails report the lack of response to RIPE NCC, the RIR that delegated the resources to them. I know that if members under APNIC fail to maintain an abuse and IRT contact their account is suspended until it is validated. I already filter all mail traffic from OVH. They are notorious for failing to act on abuse reports. Regards, Christopher Hawker From: mailop on behalf of Hans-Martin Mosner via mailop Sent: Thursday, January 25, 2024 5:10 PM To: mailop Subject: [mailop] Extortion spam from OVH-hosted *.sbs domains Tonight we received a huge wave of extortion spams from OVH hosted domains trying to get bitcoin payments. The senders claim that recipients watched child porn. This is the final straw for me to add a rule to reject all mail traffic from OVH until the sender is whitelisted. OVH is completely unresponsive to abuse complaints, they won't even react when clearly criminal activity happens from their IP space. The domains used were: aoyn.sbs bnop.sbs burx.sbs enux.sbs fojr.sbs hnls.sbs nbot.sbs ouhb.sbs pxur.sbs rnuh.sbs with the IP addresses 51.89.5.129 51.89.5.145 51.89.175.30 51.89.175.173 51.89.175.196 54.38.1.200 57.128.16.249 57.128.60.137 57.128.83.193 57.128.123.32 57.128.165.75 57.128.166.120 91.134.96.213 91.134.97.224 91.134.97.232 135.125.66.34 135.125.66.86 135.125.66.217 135.125.217.78 141.94.64.94 141.95.108.175 148.113.137.42 148.113.139.81 148.113.140.91 148.113.141.117 148.113.143.4 162.19.68.117 It's probably pointless to call for a general OVH boycott, as much as I would like to do that :-) Cheers, Hans-Martin ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Spamhaus contact?
I've never had an issue with Spamhaus. Only recently (last couple of weeks), I needed to get a recycled IP address for a VM on a cloud provider in AU removed as well as a domain delisted from their DBL, which they did with ease. Took a little bit of time however did not require any interaction from myself to do so. Explained that it was a personal mail system with 2-3 mailboxes and it was all taken care of. Kudos to Spamhaus! Regards, Christopher Hawker From: mailop on behalf of Riccardo Alfieri via mailop Sent: Wednesday, January 24, 2024 2:10 AM To: mailop@mailop.org Subject: Re: [mailop] Spamhaus contact? On 22/01/24 20:19, Curtis Maurand via mailop wrote: Given my experience with spamhaus this week, Iām convinced that they are out to put the small email provider out of business. Well from what I can see we have samples from a few days ago coming from a domain for which you have opened a ticket, with curious subjects like "casino games win real money" "Buy pills without restrictions" etc.. If you feel this is an abuse of your infrastructure by some customer of yours, please continue the ticket thread. We are not here to put anyone out of business, on the contrary, we try our best to help listees when they have an abuse problem. -- Best regards, Riccardo Alfieri Spamhaus Technology https://www.spamhaus.com/ ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] mail.ru - Connection timed out
Iām able to telnet to mxs.mail.ru:25 from Sydney AU. - CH Sent from my iPhone > On 16 Sep 2022, at 7:57 pm, Klaus Tachtler via mailop > wrote: > > ļ»æHi, > > does anyone else besides us have problems connecting to mail.ru email servers? > > We are not getting connection from mxs.mail.ru[217.69.139.150] and > mxs.mail.ru[94.100.180.31] since 2 days. > > (delivery temporarily suspended: connect to mxs.mail.ru[217.69.139.150]:25: > Connection timed out) > (delivery temporarily suspended: connect to mxs.mail.ru[94.100.180.31]:25: > Connection timed out) > > > Thanks and greetings > Klaus. > > > -- > > --- > e-Mail : kl...@tachtler.net > Homepage: https://www.tachtler.net > DokuWiki: https://dokuwiki.tachtler.net > --- mime-attachment Description: Binary data > ___ > mailop mailing list > mailop@mailop.org > https://list.mailop.org/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
[mailop] Proofpoint Mail Blocking
Hello all, If anyone from Proofpoint is on-list, could they please reach out to me off-list (chris at thesysadmin dot dev) regarding issues with mail flow through their network? Thanks, Christopher Hawker ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] SMTP noise from *.bouncer.cloud
Seems like a whole lot of bitching and whinging is going on here regarding bouncer.cloud. Pretty sure this is a mail operations list, not a āletās whinge and complain about mail servicesā list. Itās very simple - if you donāt like or want traffic from their systems entering your network or servers, then blackhole their AS or block the IPs and domains which they use. If you want to discuss their services, take it off-list with whoever you choose. CH. Sent from my iPhone > On 3 Sep 2022, at 6:20 am, Bill Cole via mailop wrote: > > ļ»æOn 2022-09-02 at 14:16:25 UTC-0400 (Fri, 2 Sep 2022 18:16:25 +) > Larry M. Smith via mailop > is rumored to have said: > >> On 8/31/2022, Bill Cole via mailop wrote: >> (snip) Who/what/where their clients are, and for what purpose of course, is not likely something we will find out unless they like to share more, but we can continue discussing this in terms of all the operators out there, and what constitutes the good vs the ugly. >>> >>> Their intended service is the problem. >>> >> >> Also at the same address physical address; >> >> https://woodpecker.co/ > > It's as if they live in a different reality... Where 'cold email' is not > intrinsically problematic. > > The name only makes it worse. > > > -- > Bill Cole > b...@scconsult.com or billc...@apache.org > (AKA @grumpybozo and many *@billmail.scconsult.com addresses) > Not Currently Available For Hire > ___ > mailop mailing list > mailop@mailop.org > https://list.mailop.org/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Microsoft 365 Mail Blocking
Fortunately I was able to raise a ticket through the M365 Admin Portal, they asked a few questions about the company and were able to remove the IP address from their spam block list. Regards, Christopher Hawker From: Agathe Allard Sent: Thursday, September 1, 2022 7:13 PM To: Christopher Hawker Cc: Christopher Hawker via mailop Subject: Re: [mailop] Microsoft 365 Mail Blocking Hello, We've been seeing the same errir for several weeks now too for information Thanks, Agathe Le jeu. 1 sept. 2022 Ć 10:59, Christopher Hawker via mailop mailto:mailop@mailop.org>> a Ć©crit : Hello All, I am currently receiving the below error when attempting to send e-mails to M365 e-mail addresses using an Exchange connector as a relay within a tenancy: 550 5.7.708 Service unavailable. Access denied, traffic not accepted from this IP. For more information please go to http://go.microsoft.com/fwlink/?LinkId=526653 AS(8564) [MEYP282MB2719.AUSP282.PROD.OUTLOOK.COM<http://MEYP282MB2719.AUSP282.PROD.OUTLOOK.COM>] [SYYP282CA0011.AUSP282.PROD.OUTLOOK.COM<http://SYYP282CA0011.AUSP282.PROD.OUTLOOK.COM>] [SY4AUS01FT014.eop-AUS01.prod.protection.outlook.com<http://SY4AUS01FT014.eop-AUS01.prod.protection.outlook.com>] If there is anyone from Microsoft on-list, could they please reach out to assist with resolving this issue? Thanks, Christopher Hawker ___ mailop mailing list mailop@mailop.org<mailto:mailop@mailop.org> https://list.mailop.org/listinfo/mailop -- Agathe Allard DELIVERABILITY MANAGER Telephone 03 74 09 85 41 MINDBAZ - 125, AVENUE DE LA REPUBLIQUE - 59110 LA MADELEINE ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
[mailop] Microsoft 365 Mail Blocking
Hello All, I am currently receiving the below error when attempting to send e-mails to M365 e-mail addresses using an Exchange connector as a relay within a tenancy: 550 5.7.708 Service unavailable. Access denied, traffic not accepted from this IP. For more information please go to http://go.microsoft.com/fwlink/?LinkId=526653 AS(8564) [MEYP282MB2719.AUSP282.PROD.OUTLOOK.COM] [SYYP282CA0011.AUSP282.PROD.OUTLOOK.COM] [SY4AUS01FT014.eop-AUS01.prod.protection.outlook.com] If there is anyone from Microsoft on-list, could they please reach out to assist with resolving this issue? Thanks, Christopher Hawker ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Microsoft Office365 blocking non Oauth2 authentication on IMAP and SMTP.
Hello Benoit, What mail client is being used, that doesn't support Oauth2? Regards, Christopher Hawker From: mailop on behalf of BenoĆ®t Panizzon via mailop Sent: Friday, August 19, 2022 4:41 PM To: mailop@mailop.org Subject: [mailop] Microsoft Office365 blocking non Oauth2 authentication on IMAP and SMTP. Hi Team I am involved in a large non profit organisation in Switzerland. A couple of years ago, that organisation got persuaded to switch to Office365 as they got a good offer for non profit organisations. One of the promises at that time: Everyone could continue working as before as all clients could connect via IMAP and SMTP, so migration all existing volunteer accounts and tools would work seamlessly. Most email user are 'external' volunteers. Now more and more co-volunteers, including myself get locked out of their email accounts, because Microsoft disabled non Oauth2 token authentication. Tools stop working. (usually found out after repeatedly going through the password reset recovery procedure and still not being able to log in). Using the web-based tools is not an option. The Problem: Most client are unable to use Oauth2. There are mailinglist tools which connect to a mailbox to process bounces as example. But any other tool generating emails and sending them via SMTP is affected. Some tools are able to do Oauth2, but the help from the 'Domain Administrator' is needed, to register those tools as 'trusted app' with Microsoft Azure to get a unique client-id for that tool, but then again the token renewal then fails after some time (this needs to be done via a HTTP request somehow) needing a lot of attention to keep those tools running. Microsoft Support states, 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? -- Mit freundlichen GrĆ¼ssen -BenoĆ®t Panizzon- @ HomeOffice und normal erreichbar -- I m p r o W a r e A G-Leiter Commerce Kunden __ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 PrattelnFax +41 61 826 93 01 Schweiz Web http://www.imp.ch __ ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
[mailop] Microsoft 365 Mail Banlist
Hello All, I have attempted to use a connector in our Microsoft 365 tenancy as a mail relay, however mail is being blocked with the below message: āā"5.7.511 Access denied, banned sender[192.46.xxx.xxx]. To request removal from this list please forward this message to del...@messaging.microsoft.com. For more information please go to http://go.microsoft.com/fwlink/?LinkId=526653."; I did try to send an e-mail to the specified address however I received a "550 5.4.300 Message expired" bounceback. I've also tried having the IP address delisted using https://sender.office.com which reported the request was denied. If there is anyone on here from Microsoft that could assist, could you please reach out off-list? Thanks, Christopher Hawker ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
