[Gllug] Postfix and body_checks

[Simon Morris]

On 25/11/05, Ian Lewis <ian.lewis at dlf.org.uk> wrote:
>
> The content filtering is intended to allow checking of headers, body, mime
> and so on. It uses the Regular Expressions to do the checking and action
> decision. Read this http://www.postfix.org/BUILTIN_FILTER_README.html it
> should clarify things.
>
> According to the manual, at least this bit
> http://www.postfix.org/header_checks.5.html, it is possible to do some form
> of substitution.

Thanks for your reply Ian,

I had read that link but it appears lack of knowledge of regex was my failing.

It isn't bulletproof but I've got as far as this in my body_checks file

/^(.+) foobar (.+)$/ replace $1 123 $2

Which replaces *just* the word foobar with the string 123.

> On balance it is better to use postqueue filtering, with Procmail maybe, to
> do your substitutions.

Yes, I considered procmail but this server is going to be a SMTP relay
so I didn't really want to hand the mail off to procmail.

Thanks again


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