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exchange server: unable to telnet from both outside and inside the LAN

I have a microsoft exchange server that recently decided not to accept external mail. So I did a dns report check and it came back as failure to contact mail server on port 25. so I tried to telnet to the server on 25 (FQDN, internet IP) from outside my firewall, no luck. I checked the firewall settings and port 25 is fowarding to the correct internal address. I then tried telneting to server from inside firewall using both the FQDN, IP, and from the server with loopback, and i get the same cannot connect to server on port 25: connection failed.

the really interesting thing is that users can send mail internally, I did not configure this server so I have been playing catch up alot and I was hoping someone could give me an outsider point of view.

Any help or insight would be greatly appreciated.
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Natech-solutions
Asked:
Natech-solutions
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1 Solution
 
redseatechnologiesCommented:
Internal mail would not be affected as it doesn't use SMTP.

Do you have anti-virus software on this machine?  That can break SMTP, among other things.

Have you rebooted?
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Natech-solutionsAuthor Commented:
Yes there is a anti-virus, but disabled it.

yes I have tried a reboot, first thing I did.

have you seen not being able to telnet from inside before?

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redseatechnologiesCommented:
>>have you seen not being able to telnet from inside before?

Yes, it is usually AV.

Disabling anti-virus is not enough, it has to be uninstalled.

-red
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Natech-solutionsAuthor Commented:
I just looked through the AV log and noticed that the last AV update failed. I will try removing it.

Thanks for your quick response
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redseatechnologiesCommented:
You are most welcome.

It isn't a Symantec product by any chance is it?
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Natech-solutionsAuthor Commented:
No mcaFee
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redseatechnologiesCommented:
Oh well, uninstall it anyway
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Natech-solutionsAuthor Commented:
can telnet from inside now, still working outside. its a start. I need to do a reboot still.
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Natech-solutionsAuthor Commented:
not work
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redseatechnologiesCommented:
Can you repeat that a little bit clearer?
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Natech-solutionsAuthor Commented:
Sorry, long day. I can telnet from inside the lan now, but not from outside the lan yet. I did not complete a reboot yet.

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redseatechnologiesCommented:
ok good - if it works inside the lan, that is a start.

Give it a reboot and make sure you can still hit it from inside, then make sure that your firewall is still forwarding port 25.

How are you testing from outside?
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Natech-solutionsAuthor Commented:
Rate now I am testing from my office, using comand line and then telnet. the problem is I am working remotely rate now to the server. so if I reboot I might loose my connection, and their office is closed. I am trying to get my remote agent to install so I can reconnect on my own, but now thats not working. Long long day
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CircleblueCommented:
Here is an idea.. run the CEICW wizard.. screen shot every screen and save to a document.   Then check settings to make sure they are right and run again If they need adjustsments do it, but sometimes you just need to run CEICW wizard to right the ship.  If the settings are right run it through and let it complete.  The CEICW wizard is your FRIEND.  

Cheers,

Brian
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CircleblueCommented:
I am assuming you are running SBS 2003 since it is posted under SBS 2003
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Natech-solutionsAuthor Commented:
yes sbs 2003
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Natech-solutionsAuthor Commented:
OK, things have changed for the worse, Went in to there office this morning and found a blue screen, fatel error: windows logon process: system is shutting down. and this keeps cycling. looks like I am in new boat, of system/data recovery. any ideas on on the blue screen, I will get the exact error number after I regroup and start working on it agian.

I stepped in a really bad situation here, their last IT company is MIA, and I am left with no notes or software, its a real mess. I always seem to be bailing my new clients out like this.

Can add double points to this or do I need to start a new question?
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redseatechnologiesCommented:
For your sake a new question would probably be the best thing, then you can attract someone else.

When you have posted the question, email a link to the question to the Zone Advisor for SBS, techsoeasy (at) experts-exchange (dot) com

Either he will post the solution for what you want, or he will find someone who can.

As for this question, I can get your points refunded if you like, and if there is no objection from anyone else.

-red
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Natech-solutionsAuthor Commented:
No, I learned something new from about the AV working with exchange so I will split the points between the to of you if you want.

thanks.
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CircleblueCommented:
nah  give em to red.. he did all the work.  

Cheers,

Brian
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Natech-solutionsAuthor Commented:
Will do

Thanks the help
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