[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

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

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

Re: [mailop] mail.ru - Connection timed out

I’m 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: > > Hi, > > does anyone else besides us have problems connecting to mail.ru email servers? > > We are not getting connection from

[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

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 “let’s whinge and complain about mail services” list. It’s very simple - if you don’t like or want traffic from their systems entering your network or

Re: [mailop] Microsoft 365 Mail Blocking

, 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 à 10:59, Christopher Hawker via 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

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 Benoît Panizzon via mailop Sent: Friday, August 19, 2022 4:41 PM To: mailop@mailop.org Subject: [mailop] Microsoft Office365

[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:   "5.7.511 Access denied, banned sender[192.46.xxx.xxx]. To request removal from this list please forward this message to