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From: Noel Jones on 15 Feb 2010 13:00
On 2/14/2010 8:29 PM, Stan Hoeppner wrote:
> Wietse Venema put forth on 2/14/2010 12:52 PM:
>
>> regexp:/etc/postfix/recipients.pcre
>
> ^^^^^^ ^^^^
>
> Wietse is this a typo or am I about to learn something new about regexp/pcre
> interchangeability/compatibility in Postfix? I'm assuming in the example above
> that the .pcre file actually contains pcre syntax, not regexp syntax.
>

It's a typo. But surely you're aware the syntax is virtually
the same[1]; pcre just has a few added features not available
in standard regexp that make writing some expressions easier.

The main reason pcre is preferred with postfix is because it's
faster -- and occasionally magnitudes faster -- than the
vendor-supplied regexp library.

[1] as far as postfix is concerned

-- Noel Jones

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