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I see this when sending mail to outlook users. The mail is delivered, so seems to functionally work, but curious what the QUIT error is about: |
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It is maddy trying to close idle SMTP connections "properly" while the remote server already closed the connection. This happens because maddy keeps a connection open after sending a message to reuse it if another message needs to be sent to the same domain, but SMTP servers frequently close idle connections before maddy checks whether it is still open. TLDR Nothing to worry about, unless you send messages to 10k different domains daily (in which case the amount of half-open connections left by maddy might be an issue). |
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thanks! |
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It is maddy trying to close idle SMTP connections "properly" while the remote server already closed the connection. This happens because maddy keeps a connection open after sending a message to reuse it if another message needs to be sent to the same domain, but SMTP servers frequently close idle connections before maddy checks whether it is still open.
TLDR Nothing to worry about, unless you send messages to 10k different domains daily (in which case the amount of half-open connections left by maddy might be an issue).