Message reject based on absense of a header(s)

[Vladimir Kozlov]

I'd like to reject messages without some headers (say, Date: or Message-ID:). As far as I understand, headers-checks and body-checks could be done as described at http://www.postfix.org/BACKSCATTER_README.html

Kind regards,
Vladimir.

The only question I could not find answer to is: how to write regexp for _absence_ of a header(s)?

smime.p7s
Description: Криптографическая подпись S/MIME