* on the Fri, Sep 26, 2014 at 12:13:24PM +0200, li...@rhsoft.net wrote:

>> I have some Exim configuration which allows me to have automatically
>> expiring email addresses. It accepts mail for any addresses matching
>> the format:
>> 
>> yyyy-mm...@tmp.grepular.com
>> 
>> But only if the YYYY-MM-DD matches a date which is today or in the
>> future. For example, "2014-09...@tmp.grepular.com" will accept mail
>> up until the end of this month and will reject mail from that point
>> onwards.
>> 
>> What would be the best way of replicating this functionality in
>> Postfix? If it would involve calling out to an external script, I am ok
>> with writing such a thing, but if it can be done "natively" inside
>> Postfix, that would be preferable.
> 
> this maybe best suited with mysql tables because you
> could have a catch-all on the MDA/LMTP and "show" postfix
> the needed RCPT table based on query

That's an interesting idea. Thanks for the suggestion. I'd prefer not
to introduce an additional service though if I don't have to. I'm
currently using flat files rather than MySQL.

I've added Amavis to the mix for SpamAssassin filtering and I'm
starting to think that might be a good place to do this if I can't do
it directly inside Postfix.

-- 
Mike Cardwell  https://grepular.com https://emailprivacytester.com
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