On Tue, May 31, 2022 at 03:28:30PM +0200, natan wrote: > I have separate servers for outgoing and incomming e-mail like > > One user who have many alias group like: > > 1)alias...@domain1.ltd - 500 recipients > 2)alias...@domain1.ltd - 500 recipients > 3)alias...@domain1.ltd - 500 recipients > 4)alias...@domain1.ltd - 500 recipients > > -all recipients is in domain domain1.ltd) > > and user send 1 email with 4 x To: > alias...@domain.ltd > alias...@domain.ltd > alias...@domain.ltd > alias...@domain.ltd
The question to ask is how you've configured delivery to Dovecot. With LMTP you should be able to deliver many recipients in one go, with just a small number of processes need to complete all the deliveries. Please post the details of the address class for the recipient domain, and what transports are used to perform delivery. Full (unmunged, with line folds preserved) "postconf -nf" and "postconf -Mf" would be very useful. -- Viktor.