15 Nov
2007
15 Nov
'07
2:35 a.m.
Hello Andre
Andre Keller wrote:
that it wasn't delivered... With 4xx Error he knows not until approx 4 days after he sent the mail. That seems not to good in my eyes...
The timeout for a delivery warning back to the sender depends on the mailserver which tries to send out the e-mail.
In the standard setup of Sendmail it does send a warning (informational) after 4 hours if there is a problems with delivery and will try for another 5 days. After that, If it could not be delivered, it will send back an error message to the sender.
This can be adjusted with the following lines in the .mc file:
define(`confTO_QUEUEWARN',4h) define(`confTO_QUEUERETURN',5d)
Other MTAs should have something similar.
bye Fabian