i have set up a test network for practice sending email messages between
email servers in different windows 2000 domains
(for the network layout see attachment) what i am trying to acheive is
to send messages from a user in the cyote.com domain
([email protected]) who resides behind a pix 501 firewall to a user
in the acme.com domain ([email protected]) who resides behind a pix 515
firewall the network has been set up so that freds messages to barney
are sent to a dmz based front end email server in the acme.com domain
and are then proxied to the backend email server where barney's mailbox is
situated which resides off the inside interface of the 515 firewall.
the frontend and backend servers are members of the same active directory
domain and therefore there should be no problems of messages received at the
frontend server being relayed to the backend server.
but the problem i've have got is that it does not work when i send a message
from fred to barney outlook on freds computer (xp-1) tells me that the message
has been sent but it never arrives at barneys mailbox there are no error messages
anywhere relating to the sending of messages so i am not sure wether the problem
lies with the 501 firewall not allowing the messages through or at the 515 firewall
not allowing the messages through.
now i have just read that there are issues using microsoft exchange
(in this case exchange 2000 with service pack 3 applied) in conjunction
with cisco firewalls but my study guide is not very forthcoming about
how to resolve them.
so this a cry for help i have been working on this for 2 weeks and have not been
able to resolve this problem does anybody know what i have to do to the firewalls
to get this to work any help will be greatly appreciated.
outlook web access through the front end server to barneys mailbox works
fine (if a little slow)
the pix 501 is running ios 6.3(4) and the 515 is running ios 7.0(4)
A simple test to perform would be to telnet from fred's PC to the IP address of the intermediate box "telnet x.x.x.x 25' if that allows you through this portion is good. Move to the next peice of the puzzle.
As previously stated enter 'no fixup protocol smtp 25' at the pix.