Remote Server at mail.pps-mail.de (81.169.211.173) returned ‘400 4.4.7 Message delayed’
29.11.2022 13:49:15 - Remote Server at mail.pps-mail.de (81.169.211.173) returned ‘451 4.4.0 Primary target IP address responded with: “451 5.7.3 Require basic authentication.” Attempted failover to alternate host, but that did not succeed. Either there are no alternate hosts, or delivery failed to all alternate hosts. The last endpoint attempted was 81.169.211.173:25’
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