Why using SMFIS_REJECT instead of SMFIS_DISCARD

AGWA / batv-tools

A system for stopping backscatter

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Why using SMFIS_REJECT instead of SMFIS_DISCARD #6

Closed DanielAW closed 7 years ago

DanielAW commented 7 years ago

Hi,

is there a reason why you use SMFIS_REJECT instead of SMFIS_DISCARD? I'm not sure what SMFIS_REJECT does. I do not want to generate a reject message for each and every bounce message.

Cheers Daniel

AGWA commented 7 years ago

SMFIS_REJECT causes the MTA to respond with a permanent SMTP failure. It doesn't cause any bounce messages to be sent. I think discarding is generally bad behavior for a mail server, because it leads the sender to think the message was accepted for delivery when it really wasn't.

DanielAW commented 7 years ago

Thanks for your quick reply and good explanation :-)