On 4/13/23 12:12, Mohsen Masoudfar wrote:
In what log is that message?
in /var/log/mail.log
Presumably this error occurs on Mailman's attempt to deliver the mail to
smtp_host. Otherwise, I don't see how it affects all mail from this list, but I also don't understand why this list's delivery would be different from other lists.Postfix is running on the local host and in /etc/postfix/main.cf, this is defined: relayhost = [email-smtp.us-east-1.amazonaws.com]:587
So Mailman is delivering to a local Postfix and that Postfix is relaying to amazonaws.com port 587.
This would appear to be related somehow to the Postfix configuration.
What does postconf -n show? Is the failing list's domain different
from other lists?
What happens if you set verp_delivery_interval: 1 in the [mta] section
in /etc/mailman3/mailman.cfg. This will cause Mailman to send a separate
message with a VERPed envelope from to each recipient. You should then
see separate mail.log messages for each recipient's delivery to
amazonaws.com with success or failure for each.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan