Avatar of neowolf219
neowolf219Flag for United States of America asked on

SMTP Relay in DMZ to Exchange 2000 ... PIX Config

hey everyone,

I am not sure if I hit the submit button, so I am going to post this question again.  

Can someone post a sample Pix config that allows traffic to flow from the outside to an SMTP relay in a DMZ, which forwards and sends traffic from an internal Exchange 2000 box.  Thanks.
Exchange

Avatar of undefined
Last Comment
kristinaw

8/22/2022 - Mon
kristinaw

Do you already have a config in place? Do you have any access-lists already created? Basically, all you need to do is allow traffic on port 25 on the outside interface into your dmz to your smtp relay box. so, you'd have a statement that looks like this:

access-list 101 permit tcp any host 223.100.100.100 eq smtp

in the above example the IP address would be the real IP of the smtp relay box that resides in the DMZ.

You'd then have a line something like this:

access-group 101 in interface outside

In the above line, 'outside' is the name you have given to your outside interface, and 'in' is the direction the traffic is coming, so it's checked when it comes 'in' the interface.

You should also restrict access to what traverses the interface to the internal network, so you'd have similar statements restricting travel from your SMTP relay box to your exchange server.

hth,
kris.
ASKER CERTIFIED SOLUTION
kristinaw

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
or
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
See how we're fighting big data
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question
ASKER
neowolf219

Thanks kris.  I just had a brain fart, and forgot all about allowing the traffic for the smtp relay to the internal network.  

kristinaw

np. glad to help.
kris.
Experts Exchange has (a) saved my job multiple times, (b) saved me hours, days, and even weeks of work, and often (c) makes me look like a superhero! This place is MAGIC!
Walt Forbes