Microsoft incident EX680695 (sorry if i recall wrongly).
Solved now!
Pete.
On Wednesday, October 11, 2023 at 03:24:03 PM GMT+2, Matus UHLAR - fantomas
via Postfix-users <postfix-users@postfix.org> wrote:
On 11.10.23 15:06, Ralf Hildebrandt via Postfix-users wrote:
>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."
I'm just solving similar problem with our client.
We are getting the same problems.
This client had no problems sending mail until today ~06:00 UTC.
--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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