On 11/23/20 10:44 AM, Jaroslaw Rafa wrote:
Dnia 23.11.2020 o godz. 10:18:39 D'Arcy Cain pisze:
I used to have a client who was not getting emails from one of his
friends. Turned out that the friend's client/MUA was not adding the
message ID.
Doesn't Postfix automatically add Message-Id: header upon sending a message
if none is present?
I guess they weren't using Postfix.
After the first message was accepted all of the rest
were silently dropped as duplicates due to a very standard procmail
recipe:
:0 Wh: msgid.lock
| formail -D 65536 $HOME/.msgid.cache
Who uses that? It's not normal to get email duplicates and it usually
means that mail system is not functioning properly. They should find the
cause of the duplicates and eliminate it instead of hiding symptoms...
If someone replies to a mailing list and copies the sender then that person
gets two copies. The above recipe avoids that.
People also send to every alias that someone has. Example, billing@,
admin@, support@, joe@, etc.
--
D'Arcy J.M. Cain
System Administrator, Vex.Net
http://www.Vex.Net/ IM:da...@vybenetworks.com
VoIP: sip:da...@vex.net
