G'day all
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)
Let's observe how this develops.
Good luck to everyone!
lukn
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