Yes it does seem to be a case that the spam prevention (SPF in 
particular I guess) seem to catch most viruses leaving very little 
work to do for real virus scanners. Anyway, lets see if others have 
better luck setting up avast using the info below :-)

Marijn


On Saturday 14/04/2012 at 10:58 am, Glenn Meadows  wrote:
> I have been unable to get AVAST to install on our Windows 2k3 server 
> since purchasing here for our small recording studio.  Nada, never, 
> nuntz.  Just never works.  Very frustrating, but luckily, there don't 
> seem to be than many viruses floating around these days, but then each 
> computer we have, has Vipre AV installed from Grisoft.
> --
> *Glenn Meadows*
> /Mayfield Mastering
> 2825 Erica Place
> Nashville, TN 37204
> 615-383-3708/
>
> On 4/13/2012 5:53 PM, Surgemail Support (Marijn) wrote:
>>
>> Interesting observation.  Is this working for others too? I just tried 
>>  the same on one of the problem servers and was unable to use this to  
>> install avast on a server where it was failing to install.
>>
>> What was the size of the original setiface.dll and after that  
>> procedure did you have a new setiface.dll in that directory and what 
>> size?
>>
>> To fill people in on some background that file is the Alwil software  
>> supplied setup dll that surgemail calls into to run the actual  
>> installer. If it is missing surgemail should re-download a copy from  
>> netwinsite.com and use that instead. In my testing just now the  
>> failing to install system started with:
>>              03/04/2012  01:58 p.m.            81,968 setiface.dll
>> Removing that did not seem to have surgemail redownloading the file  
>> (which I expected it to do), but downloading it manually from:
>>        ftp://netwinsite.com/pub/surgemail/util/setiface.dll
>> resulted in the newer (and smaller) version of this file:
>>              14/04/2012  10:37 a.m.            79,706 setiface.dll
>>
>> But even with that running the installer from the surgemail admin  
>> interface was still failing. This is on a system we have done a fair  
>> bit of messing with to try and get it to work so there may be other  
>> reasons now for it failing :-(
>>
>> So it does look like the surgemail distributions still have the older  
>> setup dll in them which is something we can fix.  Let us know if  
>> anyone else has better luck getting avast to install using the above  
>> procedure!
>>
>> Marijn
>>
>>
>>
>>
>> On Saturday 14/04/2012 at 8:01 am, surgemailHIDDEN@etwinsite.com 
>> wrote:
>>>
>>> This is a tip for those with issues installing AVAST virus scanner on  
>>> Windows Server.
>>>
>>> On two separate Windows Server machines AVAST would not install. We  
>>> were using server 2003 and server 2008 with SurgeMail Version 6.0a4-4.
>>>
>>> The solution was to remove "C:\surgemail\avast\setup\setiface.dll"  
>>> and then retry the AVAST installation through the web gui.
>>>
>>> In both cases this installed AVAST anti-virus correctly.
>>
>