experiancing smtp connection reset during Helo to multiple Domains

Posted on 2009-12-17
Last Modified: 2013-11-30
We are having an issue that just recently started in which the SMTP connection is being dropped or reset folowing Helo. This is only occuring with a couple of domains that I know of. I have verified we are not on any blacklists and I am trying to contact the admins for the domains to find out if they know why we are being reset. I am looking for any information on what would cause a reset after Helo. I should note that we are using a Barracuda appliance as our smtp gateway, but it has been working without issue for several months.

Thank You for your assistance
Question by:Mavant
    LVL 5

    Expert Comment

    Check your SMTP log file to fine out what the specific reason for the reset it.

    Also, if this only happens on a couple of domains, its possible these domains, though different, are using the same email server to accept and process messages. Which means it might just be a problem with the remote mail server.
    LVL 81

    Expert Comment

    Hello Mavant,

    HELO ? And EHLO ?

    LVL 76

    Accepted Solution

    Please have a read of my article which might highlight an inconsistency with your server / Domains configuration etc.

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