[Mailman-Users] bounces
Grant Taylor
gtaylor at riverviewtech.net
Wed May 5 03:29:21 CEST 2010
kalin m wrote:
> so if it's not 5xx it's not a bad email? i see dsn=4.0.0. that's not
> enough?
In SMTP 4.y.z DSNs are "temporary" errors. They could be caused by a
spam filter over loaded, or the system shutting down, or...
> i'm assuming it's retried by the mta. the settings in mailman clearly
> state that it should be discarded right away...
The 4.y.z should be seen as an invitation for the SMTP server to try
sending the message again at a later time.
The MTA will eventually time out the message and generate a permanent error.
Grant. . . .
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