On my postfix box what is the easiest way to add up what IP is sending all of the viruses to my mailserver? I am not sure if below text is just the log created for 1 email or more than 1 email. What I see in my logs: Jun 15 14:23:31 mail postfix/cleanup[30419]: 1: message-id= Jun 15 14:23:31 mail postfix/qmgr[3515]: CAF1A6F6E1: from=, size=18648, nrcpt=1 (queue active) Jun 15 14:23:31 mail postfix/smtpd[30015]: disconnect from unknown[ip address ] Jun 15 14:23:31 mail amavis[30512]: (30512-02) INFECTED (Worm.Zafi.B), -> , quarantine virus-015-142331-3 0512-02, Message-ID: , Hits: - Jun 15 14:23:31 mail postfix/smtp[30341]: CAF6E1: to=, relay=127.0.0.1[127.0.0.1], delay=1, status=sent (250 2.7.1 Ok, discarde d, id=30512-02 - VIRUS: Worm.Zafi.B) Jun 15 14:23:34 mail postfix/smtpd[30015]: warning: their.ip: hostname someone.likes.sendvirus.domain verification failed: Host not found Jun 15 14:23:34 mail postfix/smtpd[30015]: connect from unknown[some.ip.of.virus.sender] Jun 15 14:23:34 mail postfix/smtpd[30015]: E44C96F6E1: client=unknown[] Jun 15 14:23:35 mail postfix/cleanup[30362]: E44C96F6E1: message-id=