Working in the press office which needs to do mailing notifications to a large number of mailboxes.
I must say that don't spam!
At some point you need a mail server to run yourself, set up Postfix, but now revealed an unpleasant situation:
when sending a letter with more than 100 recipients, an error occurs
Working from mail clients The Bat, when you send such a letter, the bat says that the send failed, the error number is not showing
In the logs:
13.02.2012, 17:38:49: SEND — Connecting to SMTP server on port 25 184.108.40.206
13.02.2012, 17:38:49: SEND — Connection with SMTP the server was successful
13.02.2012, 17:38:49: SEND — Authentication (normal method)...
13.02.2012, 17:38:49: SEND — sending a letter to email@example.com etc.
13.02.2012, 17:39:09: SEND — the Last transferred address of the recipient was
!13.02.2012, 17:39:09: SEND — the Letter is not sent. Server reports:
!13.02.2012, 17:39:09: FETCH — connection with the server is interrupted (the last transferred commands: "RCPT TO:", "RSET")
13.02.2012, 17:39:09: SEND — Connection is completed — sent letters: 0
13.02.2012, 17:39:09: SEND — failed to send some emails — see the Log
Here and the recipient firstname.lastname@example.org is 100 in the list, can't find the option which allows recipients to increase
thought it smtpd_recipient_limit changed to 250, did not help
default_recipient_refill_limit also did not help