We are having the exact same problem as in this thread:
I am going through the steps provided and am getting stuck trying to telnet to our mail server. I cannont telnet to the FQDN, only to the ip address.
I do the following:
Default Server: dcserver3.ic.internal
> set type=mx
independencecenter.org MX preference = 20, mail exchanger = mail2.independencecenter.o
independencecenter.org MX preference = 10, mail exchanger = barracuda.independencecent
rg internet address = 18.104.22.168
er.org internet address = 22.214.171.124
I telnet to independencecenter.org 25 and it just hangs, then goes back to a windows prompt.
I telnet to the ip and get the following:
er.org ESMTP Service (Lotus Domino Release 7.0.2) ready at Mon, 17 Nov 2008 11:57:15 -0600
However, it won't respond to anything I type. Can anyone tell me what's going on?
Also, how can I block port 25 outgoing on our sonicwall PRO 2040 Standard?
Thanks for any assistance,