Hi I just run a postqueue -p command on my server and i saw 1507 requests like this: Code: 9435F16A8402 5962 Sun Apr 27 09:51:44 [email protected] (delivery temporarily suspended: connect to ms36a.hinet.net[168.95.5.36]: Connection timed out) [email protected] (delivery temporarily suspended: connect to ms27a.hinet.net[168.95.5.27]: Connection timed out) [email protected] (delivery temporarily suspended: connect to ms41a.hinet.net[168.95.5.41]: Connection timed out) [email protected] (delivery temporarily suspended: connect to ms23a.hinet.net[168.95.5.23]: Connection timed out) [email protected] (delivery temporarily suspended: host mx1.mail.tw.yahoo.com[203.188.197.9] refused to talk to me: 421 Message from (83.18.121.44) temporarily deferred - 4.16.50. Please refer to http://help.yahoo.com/help/us/mail/defer/defer-06.html) [email protected] [email protected] [email protected] (delivery temporarily suspended: connect to ms4a.hinet.net[168.95.5.4]: Connection timed out) [email protected] (delivery temporarily suspended: connect to ms19a.hinet.net[168.95.5.19]: Connection timed out) [email protected] (delivery temporarily suspended: connect to msa-mx5.hinet.net[168.95.6.133]: Connection timed out) [email protected] -- 6952 Kbytes in 1507 Requests. I assume that someone is trying ot send mails via my server How i can stop that? edit: nwm solved