11.10.23, 15:06 +0200, Ralf Hildebrandt via Postfix-users: > Since this morning, various MX hosts in *.mail.protection.outlook.com > reporting are reporting back temporary errors for us: > > Exhibit A) > > host ohri-ca.mail.protection.outlook.com[104.47.75.228] said: 452 4.5.3 Too > many recipients (AS780090) > [YQBCAN01FT018.eop-CAN01.prod.protection.outlook.com 2023-10-11T02:11:41.144Z > 08DBC99CDEC51952] (in reply to RCPT TO command) > (for a mail with 4 recipients, in that particular case) > > Exhibit B) > > host fraport-de.mail.protection.outlook.com[52.101.73.16] said: 451 4.7.500 > Server busy. Please try again later from [193.175.73.209]. (S77719) > [AMS0EPF0000019E.eurprd05.prod.outlook.com 2023-10-11T01:32:21.804Z > 08DBC9B278D9A989] (in reply to end of DATA command) > (for a single recipient mail) > > This is happening for multiple tenants on *.mail.protection.outlook.com > Has anybody made similar observations? According to > https://sendersupport.olc.protection.outlook.com/snds/ : "All of the > specified IPs have normal status."
There are multiple reports of this problem with MS servers on the mailop list and on reddit too. Solutions for the problem I have seen none yet, though. -- Regards mks _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
