Hello folks,

i've got a pretty easy question about a line in postfix logfile:

Sep 12 11:40:29 hostname postfix/smtpd[79381]: C5FA32855D: client=unknown[x.x.x.x], sasl_method=LOGIN, sasl_username=joeuser

What has happend when that line appears in that logfile?

1. A user opens a new connection and is then authenticating to send a mail. And if these lines appear very often then everytime this line appears a new connection will be opened.

2. A user already has an open connection to postfix and is just authenticating to send a mail.

I'm trying to debug an automatet e-mail-sending process in which more than a few 100 mails are beeing sent. Postfix at some time is not respondig well, and i think he is blocking further connections due too many connections are active or have been active.

Anyone got an idea?

Thank you