Scalix Forums

Ok, so I have been having some issues with my scalix server over the past couple of weeks and one issue has been resolved on a thread I started earlier today (Thanks)..

This one is a little different.

I have one friend that I am trying to send and email to and it is having issues. Here is what I know so far.

- I can go to dnsstuff.com and punch in his email address and it comes up sucessfull
- I can do an nslookup from my email server to his domain sucessfully
- I can not email to him
- the email gets stuck in the sendmail queue and its status is "Deferred: Connection timed out with domain.com"
- I can receive email from him.
- I am using public DNS servers (Verizons 4.2.2.2 and 4.2.2.1)

Now this is where it gets a little wierd, when I try to flush the queue and force that email to send, my servers DNS locks down. I can no longer resolve DNS while the server is trying to send this email. I can ping out the internet by IP etc, but not by name and nslookups fail..

Any ideas?

So, in an effort to resolve this I added a local bind DNS server last night and I can get rid of the DNS not resolving now.

Still cant send to this accout, but DNS doesnt lock up.

nevermind...

I resolved this.. I was able to telnet to his mail server, but it never brought up anything more then identifying the escape key.

It ended up being a setting on my side in the firewall..

Now I can telnet in and send a message etc...

All is well now..

msweany wrote:nevermind...

I resolved this.. I was able to telnet to his mail server, but it never brought up anything more then identifying the escape key.

It ended up being a setting on my side in the firewall..

Now I can telnet in and send a message etc...

All is well now..

I am encountering the same problem on my server, sending to a specific server. What was it that you needed to change in the firewall?

Thanks

kkircher,

I'me also having the same issue and the problem was AntiVirus that is protecting my server where virtual machines are hosted.

Hop this help you.

I found my solution to actually be my pix firewall. Turns out version 7.2 can mess with ESMTP if you are inspecting ESMTP traffic. I just happened to try turning this off after reading an article about how the inspecting ESMTP can potentially block certain commands that are passed. I believe the problem was my server was responding with some of these commands, but my firewall was blocking it.

Thanks anyways for the suggestion.