On Thursday 02 August 2007 00:29, D. Dante Lorenso wrote: > When email is targeted at certain mailboxes (mailing lists), I'd like to > rewrite the message subject to either prepend or append some text if the > subject does not already contain that text as a substring. This way, > mail that goes through the list will be stamped with something like > '[LISTNAME] original subject'. > > Does anyone have any pointers on how I can most easily do this?
There's the headers_add and headers_remove router (and transport) options. See <http://www.exim.org/exim-html-current/doc/html/spec_html/ch44.html#SECTheadersaddrem>. headers_remove = Subject headers_add = Subject: [foo] $rh_Subject: Mail copies with equal header additions and removals are automatically grouped together. Note the $rh_. The data you give to add_header is not further encoded (i.e. RFC 2047) by Exim. You want to skip adding [foo] it it's already in the subject. Use the decoded version, $h_Subject:, to check that. You have to use the same condition both in headers_remove and headers_add. Consider looking up all fields at the same time and using address_data to store them. See address_data i chapter 15 for an example. You might also consider _not_ tagging the subject. Most MUAs can automatically sort list mail into separate folders, making this kind of tags rather unnecessary. -- Magnus Holmgren [EMAIL PROTECTED] (No Cc of list mail needed, thanks) "Exim is better at being younger, whereas sendmail is better for Scrabble (50 point bonus for clearing your rack)" -- Dave Evans
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