Gonzo Fernandez:
> # egrep 884643E30022 /var/log/maillog
>
> Dec 12 10:08:50 batch-ca4-02 postfix/pickup[26935]: warning: 884643E30022:
> message has been queued for 1 days
> Dec 12 10:08:50 batch-ca4-02 postfix/pickup[26935]: 884643E30022: uid=500
> from=<x...@xxxx.com>
What user acccount has uid=500? Is this your web server? Perhaps
you have an exploitable web application. This is very popular with
spammers.
To block local submissions from this user,
/etc/postfix/main.cf:
authorized_submit_users = !username, static:anyone
> Dec 12 10:08:50 batch-ca4-02 postfix/qmgr[26936]: qmgr_active_feed:
> incoming/884643E30022
Please turn off all your verbose logging in master.cf. It makes
Postfix VERY VERY SLOW and makes mail overload problems much worse.
On the other hand, if your email overload is caused by spam, please
turn on verbose logging on everything, to slow down the delivery
of spam.
Wietse
