First of all an appeal on all specialists to be understandfull with me, newbie. I have a RaQ 550 that I have to admin bymyself. I have executed mailq and found out that there are mails in the queu that I did not sent. Is someone exploiting my server? Here is an example of the report:
----Q-ID---- --Size-- -----Q-Time----- ------------Sender/Recipient------------
mBRIDxxxxxxx 13270 Sat Dec 27 10:13 Majordomo-Owner@xxx.xxx.net.
(Deferred: Connection timed out with attcanada.net.)
xxx@attcanada.net
mBR7Hvxxxxxxx 12986 Fri Dec 26 23:17 Majordomo-Owner@xxx.xxx.net.
(Deferred: Connection timed out with ifg.com.)
xxx@ifg.com
etc.
I do not have smtp active, only pop. I have activated now POP Authenticated Relaying with my IP through the GUI interface. Would this be enough to prevent exploiting my server for spam?