For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

2 Replies

  • Bart_18836's avatar
    Bart_18836
    Icon for Nimbostratus rankNimbostratus
    May 26, 2014

    For general smtp implementation where smtp virtual server uses snat I would suggest doing this :

     

    http://terminaltoowide.wordpress.com/2011/10/27/smtp-relay-irule/

     

    since you would like to map original IP (or group of them) to single snat IP. Additionally I have an iRule which logs every single SNAT event for SMTP virtual servers , this way we can easily detect who is spamming our smtp servers :) , but a lot depends on your general setup in your network environment.