Hi,
we recently installed EX2007 with the following configuration:
1 Server for Hub, CAS and Mailbox, one as Edge transport server. The Edge
Server is connected with one NIC directly to the internet (we did not set up
a firewall yet) and with the other NIC to the switch where all other servers
are connected to (like DC, etc)
I followed quiet precisly the instructions of the set up and we are able to
send outbound mail without problem. When I try to send an email or answer one
of the sent mails, I get the following error:
A configuration error in the e-mail system caused the message to bounce
between two servers or to be forwarded between two recipients. Contact your
administrator.
So we tried also with a differnet mail system and got this error:
SMTP-connection with IP [xx.xx.xx.xx:25] herzustellen Thu 2007-11-01
18:58:06: * IP xx.xx.xx.xx in connection failure cache for up to 5 minutes
due to previous connection failure(s)
I have no idea what could cause this error, any help is very much appreciated.
Thank you
--
Udo Michels