Re: [mailop] Microsoft Outbound Spam Seemingly Has Morphed

Thanks for diving deeper there. One other issue is that the recipient addresses do not exist on our system. But more importantly, at the time of posting there were no subdomain DNS records for the sender’s domain. We’ve seen bad actors leverage legitimate company’s unprotected subdomains

Re: [mailop] Microsoft Outbound Spam Seemingly Has Morphed

On 05.02.2024 at 13:55 L. Mark Stone via mailop wrote > Overnight in our logs, we are starting to see Microsoft spam like this: > Feb 5 12:19:28 my postfix/smtpd[1015436]: NOQUEUE: filter: RCPT from > mail-mw2nam10acsn2106.outbound.protection.outlook.com[104.47.55.106]: > : Sender address

Re: [mailop] Microsoft Outbound Spam Seemingly Has Morphed

> Good Morning, > > Overnight in our logs, we are starting to see Microsoft spam like this: > > Feb 5 12:19:28 my postfix/smtpd[1015436]: NOQUEUE: filter: RCPT from > mail-mw2nam10acsn2106.outbound.protection.outlook.com[104.47.55.106]: > : Sender address triggers FILTER >

[mailop] Microsoft Outbound Spam Seemingly Has Morphed

Good Morning, Overnight in our logs, we are starting to see Microsoft spam like this: Feb 5 12:19:28 my postfix/smtpd[1015436]: NOQUEUE: filter: RCPT from mail-mw2nam10acsn2106.outbound.protection.outlook.com[104.47.55.106]: : Sender address triggers FILTER smtp-amavis:[127.0.0.1]:10024;