[nflug] Email

[Darin Perusich]

Because I like to simplify my life I tend to only use software that's 
distributed with the OS, which is OpenSuSE 10.2.

Postfix - MTA
Amavisd-new - Content checker
Clamav + freshclam - Anti-Virus
SpamAssassin - spam
Razor - spam detection/filtering network
Mailgraph - gathering postfix statistics (addon)

eric wrote:
> Starting new sub-thread..
> Darin, can I ask, what are all the mail packages you use postfix, etc..
> 
> I'd love an outline or rough draft?
> 
> 
> 
> Darin Perusich wrote:
>> Will this machine be an MX server or will it be behind your MX and 
>> relaying from there? I'm also not understanding your SPAM tagging 
>> point. Are you concerned about your relay marking mail from the 
>> domains it's relaying for marking them as SPAM? This is easily 
>> remedied by setting the following spamassassin rule and included ALL 
>> of the relaying domains:
>>
>> header LOCAL_RCVD Received =~ /.*\(\S+\.cognigencorp\.com\s+\[.*\]\)/
>> describe LOCAL_RCVD Received from local machine
>> score LOCAL_RCVD -50
>>
>> The only way outgoing mail will be sent from a different IP is using 
>> some type of virtualization, and why doesn't this even matter? It 
>> sounds like over complicating the setup.
>>
>> You mentioned using Postfix for the MTA, a wise move IMHO ;-). Are you 
>> planning on using amavisd-new to filter, tag spam, and virus check? 
>> This is a very typical and efficient setup for relaying for multiple 
>> domains not to mention straightforward. Your setup is a little more 
>> complication then what I have setup here but it's pretty much the 
>> same. If you want more details let me know.
>>
>> Robert Meyer wrote:
>>> OK, before we get into this, remember that this is NOT my design.  
>>> I'm trying to make the best of what I have here...  Having said that...
>>>
>>> We currently have several clients, all using an Imail server 
>>> (remember, not my design) to handle Email.  We are also routing a few 
>>> Exchange servers through it.  In essence, all mail coming in for 
>>> these clients hits a single server that separates the domain names 
>>> and routes the mail to the backend servers.  We also have some 
>>> clients that are actually storing their mail on the Imail server.  
>>> These two functions are going to be separated so that the relay 
>>> server and the POP/IMAP functions are on different boxes.  The mail 
>>> servers that I relay for also relay back through the Imail server.  
>>> The problem is that if one client gets infected with a spam virus or 
>>> otherwise gets the server tagged as a spam host, it breaks all of the 
>>> clients that route through that server.  We (actually, they) want to 
>>> keep the single relay host, because it's good for troubleshooting.  
>>> (remember, not my design)
>>>
>>> What I need to know is:  Is there any way that I can set up a system 
>>> that will relay mail from internal mail servers but have the IP 
>>> address leaving the server be different for each domain.  
>>> Essentially, I want it to look like each domain is coming from a 
>>> different server.  We are switching the relay server to CentOS (RHEL 
>>> clone) and are going to use Postfix for the relay functions.
>>>
>>> The only idea that comes to mind is to create multiple virtual 
>>> servers with VMWare and route each client through a different virtual 
>>> machine.  I know I can create multiple IP aliases on the machine.  
>>> Can I leverage that somehow to get different source addresses for 
>>> different domains?
>>>
>>> Thanks...
>>>
>>> Cheers!
>>>
>>> Bob
>>>
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>>>
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> 
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-- 
Darin Perusich
Unix Systems Administrator
Cognigen Corporation
395 Youngs Rd.
Williamsville, NY 14221
Phone: 716-633-3463
Email: darinper at cognigencorp.com