Barracuda Spam Firewall - 421 Error: too many messages in one session

Discussion in 'Mail Server Support' started by popowich, Feb 21, 2012.

  1. popowich

    popowich EQ Forum Admin Staff Member

    Aug 12, 2008
    Likes Received:

    Are your Barracudas dropping connections from a legitimate sender with the following error?

    421 Error: too many messages in one session

    If you are deferring connections from a sender and believe that it is legitimate traffic you can go to the Advanced -> Email Protocol tab and increase the value of Messages Per SMTP Session to a more appropriate value for your mail hosting environment.

Want to reply or ask your own question?

It only takes a minute to sign up (and it's free!). Click the orange sign up button to choose a username and then you can ask your own questions on the forum.