[7.460][QUESTION][ANSWERED] pop source ip zero

Hi Friends !
source ip 0.0.0.0 is it ok ?

2009:07:04-20:52:32 ace75 pop3proxy[7576]: ***@***.com logged in (account 1)
2009:07:04-20:52:41 ace75 pop3proxy[7576]: id="1101" severity="info" sys="SecureMail" sub="pop3" name="email quarantined" from="GladysFranklin30@fusemail.com" to="v***xi@***x.com" subject="Fix your pain" size="873" srcip="0.0.0.0" dstip="66.118.157.156" uid="1246720993.24612.ns80.webmasters.com" ident="0/7576-1-1246720954" reason="as" extra="confirmed"
2009:07:04-20:52:43 ace75 pop3proxy[7576]: id="1100" severity="info" sys="SecureMail" sub="pop3" name="email passed" from="MAILER-DAEMON@ns80.webmasters.com" to="vi***er@***xx.com" subject="failure notice" size="1941" srcip="0.0.0.0" dstip="66.118.157.156" uid="1246720994.24640.ns80.webmasters.com"
2009:07:04-20:52:44 ace75 pop3proxy[7576]: logged out 

Thanks