On Wed, Aug 10, 2011 at 10:11:49AM +0200, Ansgar Wiechers wrote: > On 2011-08-10 Jeroen Geilman wrote: > > On 2011-08-10 09:20, Troy Piggins wrote: <snip /> > > It is not a variable expansion. Use this instead: > > > > /(user1)@mydomain.com/ $1_s...@mydomain.com > > > > Read http://www.postfix.org/pcre_table.5.html, section Text > > Substitution for details. > > > > Note that this offers zero advantage over an exact match. > > Unless you're using wildcards/alternatives in the group, that is. > > /(user1|user2|user3)@mydomain.com/ $1_s...@mydomain.com > /(foobar-.+)@mydomain.com/ $1_s...@mydomain.com > > I'd also suggest anchoring the expression on both sides, and escaping > the dot in the domain name: > > /^(.+)@mydomain\.com$/ $1_s...@mydomain.com > > Otherwise the expression might inadvertently match other addresses as > well (like f...@mydomain1com.net). Yes, not very likely in this context, > I know, but I prefer to keep regular expressions as exact as possible. > It helps avoiding problems where you least expect them.
Thanks mate. That helped a lot. See my response to Jeroen's message where I've implemented something that incorporates your great suggestion here too. Thanks again.
