On Tue, Jan 11, 2011 at 09:43:36PM +0100, Andy Spiegl wrote:

> I'd like to configure postfix to accept recipient addresses like
>  foo.u...@domain
>  bar.u...@domain
>  baz.u...@domain
> without defining an alias for each address.

More specifically, "u...@example.com" is a defined email address and 
you want to accept all "prefix.u...@example.com" variants for valid
users and arbitrary prefixes?

> If I understand the manual right the recipient_delimiter variable is
> not good for this.  Can you guys give me a hint on how this can be
> done?  The reason is that our previous mail provider allowed this kind
> of address extensions

Well, it is not really an "extension", rather a prefix. You need a
"tcp table", or MySQL virtual(5) table that will map alll such inputs
to just the bare "u...@example.com", but unlike a regexp table, ONLY
when the user is valid.

-- 
        Viktor.

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