Re: Using SRS in production

On Thu, Feb 10, 2011 at 11:42:24PM +0100 or thereabouts, Jan L?hr wrote:
> Hello,
> 
> I'm posting here, 'cause srs-discuss (mentioned at: http://www.openspf.org/Forums) bounced while subscribing.
> 
> I'm in the need of deploying srs in production:
> We're running a small site (debian, postfix as mta), that uses alias adresses via postfix'es virtual alias maps. Some aliases forward to external domains (eg. @gmail.com, @gmx.com), that perform spf checking. All virtual alias maps are stored in ldap (by that: if mail is received via smtp, postfix performs an ldap search in order to find all receivers).
> 
> In theory, srs can be implemented using a filter (for postfix) or using another mta as smarthost (having srs-capabilities already built in) - am I right?
> Using google I found:
> - http://www.libsrs2.org/patch/postfix-libsrs2-2.1.4-1.patch that seems quite old. Neither debian-security support is provided nor integration into postfix (upstream) is done yet.
> - http://www.libsrs2.org/srs/Mail-SRS-0.31.tar.gz that might be used with postfix this way: http://www.postfix.org/FILTER_README.html - but I'ven't found an example config yet (however, a debian package exists)
> 
> So, what's your way of implementing srs?
> 
> Thanks in advance,
> Keep smiling
> yanosz
> 

I have been using the http://www.libsrs2.org/srs/Mail-SRS-0.31.tar.gz
for the last seven years.  Unfortunately, I have been using it with
sendmail, so I cannot give you specific details about implementation
with postfix.  Generally, I keep a file of domain names that are
the virtual aliases.  That list is checked by SRS for alias/unalias 
work before normal processing happens.  I just have to automatically
rebuild the file if there is a change in the virtualization data files.  

Good luck with the postfix side of the package.
-Mike Elliott