We recently had an issue similar to this. Our email gateway was
receiving multiple copies of a message from the sending domain. It
turned out to be our ISP having SMTP Inspection enabled on a router-port
firewall ACL and that was preventing proper communication between our
receiving server and the sending server.
What may be helpful to troubleshoot this is if you can get your domain
mail queue log from the sending server to let you know why they are
stuck in a sending loop.
--
Randy Saeks
Network Manager
Glencoe School District 35
@rsaeks
kazabe <mailto:[email protected]>
February 17, 2016 at 16:40
hi.
i some users are reporting me to they are receiving many copies of the
same message. the remitent just send 1 message and the recipient
receipt 7 or more copies of the same message.
we check the send mail folder in the remitent (outlook 2010) and just
have the message sended 1 time.
the copies received in the destination folder have aprox 4 or 6 mins
between them.
can be a client sender problem? how can i verify that?
thanks and regards.
