Hello, On 02.06.26 16:54, lukn via mailop wrote: > Heads up, looks like Microsoft M365 in Germany has implemented new ultra > low rate limits. We see high numbers of deferred messages: > > host example-de.mail.protection.outlook.com[52.101.170.1] said: 421 > 4.3.2 The maximum number of concurrent connections per resource forest > has exceeded a limit, closing transmission channel. > pod72038ehf.outlook.com. PRX8 [Name=InboundProxyTrackingAgent][AGT=IPT] > [MxId=XXX] [FR1PEPF00000F0D.DEUP281.PROD.OUTLOOK.COM > 2026-06-02T13:51:10.874Z YYY] (in reply to end of DATA command)
It seems to have stopped at around 19:00 (in Germany) yesterday. Regards, Thomas Walter -- Thomas Walter Datenverarbeitungszentrale FH Münster - University of Applied Sciences - Corrensstr. 25, Raum B 112 48149 Münster Tel: +49 251 83 64 908 Fax: +49 251 83 64 910 www.fh-muenster.de/dvz/
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