Re: [RFC] Exim as standard Debian MTA?
Manoj Srivastava <email@example.com> wrote:
> It is not a hacked up version of regex. It does not nneed to be, a
> general purpose regex engine shall serve really poorly for rewrite
> rules. It is a specialized matching language, whose tokenizer is
> optimized for the requirements of SMTP address rewites.
SMTP doesn't *need* address rewrites. UUCP and the like do, but SMTP
doesn't. Certainly, RFC 821 doesn't use the term "rewrite".
Also, once you've solved the SMTP mail routing problem, perl is a dandy
language for dealing with any requirements rewriting message headers
and the like.