Re: [Assp-user] Port Blocking Weirdness

[Geoff M. <geo...@tw...>]

I would check your local AV.  A lot of the new one's have either an smtp proxy, or filter what applications are allowed to send on SMTP.  What you described is exactly what I have seen happen with McAfee 8.0

-Geoff Myers

---------- Original Message ----------------------------------
From: Cameron Biggart <cam...@ya...>
Reply-To: ass...@li...
Date:  Fri, 18 Nov 2005 10:38:16 +1100

>Hey all
>
>A couple of weeks ago I noticed that some programs on my PC couldn't 
>send email directly to port 25 on our mail sever (which is being guarded 
>by ASSP) when they had previously had no trouble doing so. I put it down 
>to a failure in the program as Thunderbird was still able to send (SMTP 
>on 25) and receive (IMAP on 143 and POP on 110) with no problem.
>
>Yesterday I started testing this and I can't telnet to port 25 on the 
>mail server at all but Thunderbird can still connect and has no trouble? 
>This has left me boggling at what behaviors in ASSP could be causing 
>this? The ASSP logs don't even show an attempted connection when I try 
>telnet and the local Firewall on my machine is turned off so it's not 
>program blocking at this end.
>
>Can anyone give me a clue of where to start looking? I have all the 
>local subnets set in the 'accept all mail' setting and if I telnet to 
>port 2225 on the same box (where ASSP passes on its SMTP connections) I 
>can connect just fine with telnet or whatever. I'm still running 1.1.0 
>of ASSP if that makes a difference?
>
>-- 
>Regards
>
>Cameron Biggart
>IT Manager
>Yaffa Publishing
>(02) 9281 2333
>cam...@ya...
>
>
>
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