Hello
since you are not using Tls, it is trivial to trace the exchange with the mail server with a tool like tcpdump. Did you do so ? if yes, did you try to reproduce the exchange using a tool like telnet (or nc) ?
You can follow the mail exchange also with Using Duplicati from the Command Line - Duplicati 2 User's Manual
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Failed to send message: MailKit.Security.AuthenticationException: AuthenticationInvalidCredentials: 5.7.0 Authentication Rejected (Login incorrect) [6382]
Version: (2.0.4.22_canary_2019-06-30)
Hi,
Probabaly everyone knows, but I only found out after a while of testing.
After setting up sending an email after the backup had finished, I got a warning (1).
At first I couldn’t find where it was shown, because the general log shows no errors and …