Do you have any spam filters and/or anti-virus for POP3 e-mail accouns?
For domains hosted on http://cp.infolinksahostig.com. we don't officially offer anti-spam and anti-virus protection, however we use Bayesian Filtering, reverse DNS blacklist and few other techniques to eliminate spam.
For domains hosted on http://cp3.infolinksahostig.com., all incoming e-mail is virus checked and every POP3 e-mail account comes with fully configurable spam filtering