surgemail-support <surgemailHIDDEN@t@netwinsite.com> wrote:
>
 Chris,

Thank you for the prompt follow-up. This is what we have seen in testing:

 1) Send the same message via another system
      *We have only one secure mail system we use for partner communication, we have been able to send the                  same message either later in the day or through a different user account when we get the connection closed error. Therefore I don't think it's problem with the message itself.

   2) send the same message to a different destination user on the same domain
        *Usually the messages are addressed to 5 or more users at the destination host, delivery fails to all of the users.

    3) send the same message to a different domain.
         * Internal accounts are always cc'd on outgoing messages and we have no issue receiving these messages internally. Also when cc'ing a gmail account delivery is successful.

I upgraded Surgemail to latest stable release about a month ago and it has not resolved this issue.

Thank you very much for your time and attention to this matter.

Best,
Ian