On 10/03/2020 17:57, Gerald Galster wrote:
In case there is no MX record the mail is delivered to the domain's ip
(a/aaaa record).
It's up to the domain's administrator to set a NULL MX to prevent
that, but it's quite new:
https://tools.ietf.org/html/rfc7505
What postfix can do:
delay_warning_time (default: 0h)
The time after which the sender receives a copy of the message
headers of mail that is still queued
bounce_queue_lifetime = 4h
maximal_queue_lifetime = 1d
...
man 5 postconf
Best regards
Gerald
Gerald and Bill, you have both of you right, /delay_warning_time/ it's
the parameter I was looking for.
Anyway, after setting up delay_warning_time=5m I noticed some warnings
in logs:
Mar 10 17:52:02 mail postfix/bounce[7326]: warning: [built-in]: zero
result in delay template conversion of parameter "delay_warning_time_hours"
Mar 10 17:52:02 mail postfix/bounce[7326]: warning: please reduce time
unit "hours" of "delay_warning_time_hours" in delay template
Mar 10 17:52:02 mail postfix/bounce[7326]: warning: for instructions see
the bounce(5) manual
Thank you for your help.
Best regards,
Catalin Bucur
