Bowie Bailey writes:
I have been seeing quite a few errors like this in my logs recently (633 of them yesterday). Most of them are like the first example. What are they and how do I investigate them further (if I need to)?
Nov 11 04:04:19 bnofmail courieresmtpd: writev: Broken pipe
Receiving a message via smtp. Courier sent some reply to the sender, but the sender terminated the connection. This can be ignored.
Nov 11 05:23:14 bnofmail courieresmtp: id=0063C0B4.419283A8.00000CCA,from=<#############>,addr=<###############>: Broken pipe
Sending a message via smtp. Courier sent the next command in the SMTP conversation, but the receiver terminated the connection. Usually indicates a crashing mail server on the recipient's side.
Could also happen when Courier is beginning to send another message to the same mail server over an existing a connection, and the previous message was rejected by the recipient's overzealous spam filter which then immediately terminated the connection, on its own initiative.
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