oubound SMTP results in no packets

I have a new install of Windows 2003 Server SP1. I am unable to telnet to
port 25 on our mail server.

There is nothing between these 2 machines except a switch. Using network
monitor I see NO packets generated during this test.

We have an app (Blackboard) that runs on this server and is trying to send
outbound mail. Anyone seen this?

Blake

> I have a new install of Windows 2003 Server SP1.
> I am unable to telnet to port 25 on our mail server.
<snippage>

I'm assuming that running "netstat -an" on the server
shows port 25/tcp in listening state on the address
you're using as your telnet target (or on 0.0.0.0); now
if that's true there must be something blocking port 25
did you check if the w2k3 firewall is enabled or if there's
a portfiltering or IPSec port blocking policy active ?

Regards

--

* ObiWan

Microsoft MVP: Windows Server - Networking
http://www.microsoft.com/communities/MVP/MVP.mspx
http://mvp.support.microsoft.com

DNS "fail-safe" for Windows clients.
http://www.ntcanuck.com

Newsgroups and forums
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408+ XP/2000 tweaks and tips
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I can connect from other clients/servers to port 25 on the SMTP server.

There is clearly something on the source machine that is not allowing the
SMTP connection - not the Windows firewall because that is not enabled (and
doesn't block outbound connection as I understand it)

Blake

"ObiWan" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
>> I have a new install of Windows 2003 Server SP1.
>> I am unable to telnet to port 25 on our mail server.
> <snippage>
>
> I'm assuming that running "netstat -an" on the server
> shows port 25/tcp in listening state on the address
> you're using as your telnet target (or on 0.0.0.0); now
> if that's true there must be something blocking port 25
> did you check if the w2k3 firewall is enabled or if there's
> a portfiltering or IPSec port blocking policy active ?
>
> Regards
>
> --
>
> * ObiWan
>
> Microsoft MVP: Windows Server - Networking
> http://www.microsoft.com/communities/MVP/MVP.mspx
> http://mvp.support.microsoft.com
>
> DNS "fail-safe" for Windows clients.
> http://www.ntcanuck.com
>
> Newsgroups and forums
> news://news.ntcanuck.com
> http://forums.ntcanuck.com
>
> 408+ XP/2000 tweaks and tips
> http://www.ntcanuck.com/tq/Tip_Quarry.htm
>
>

McAfee 8 was blocking outbound SMTP 25 ports

Problem solved (damn you McAfee!!)

Blake

"Blake" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
>I have a new install of Windows 2003 Server SP1. I am unable to telnet to
>port 25 on our mail server.
>
> There is nothing between these 2 machines except a switch. Using network
> monitor I see NO packets generated during this test.
>
> We have an app (Blackboard) that runs on this server and is trying to send
> outbound mail. Anyone seen this?
>
> Blake
>