So here's an odd one. Since last week a few messages have gone to one of our distribution lists instead of their intended recipient. Two of the emails were sent by our users, and one was sent from the outside.
When the message is sent the sender receives two undelivered messages (even though the message is delivered). One is from the Mail Delivery System titled "Undelivered Mail Returned to Sender" and the other is from Content-filter titled "Undeliverable Mail". Both of them have the same error message, for each member of our dist. list (who shouldn't be receiving the message anyway) it gives the following error:
host 127.0.0.1[127.0.0.1] said: 554
5.6.0 Failed, id=26163-01, from MTA([127.0.0.1]:10025): 554 Error: too many
hops (in reply to end of DATA command)
Overall everybody has loved Zimbra so far, but not that their emails are getting sent to everyone in the company there's a little bit of hostility. What could be going on here?