On Thu, Dec 18, 2014 at 10:14:29AM -0800, Will Yardley wrote: > On Thu, Dec 18, 2014 at 08:53:03AM +0000, John Long wrote: > > In the ongoing battle against spammers the latest trick is them not > > including a message-id header at all. > > > > Is there a recipe for Mutt to detect this and score accordingly? Going over > > the doc and searching the web I haven't had any luck finding any discussion > > on this. > > Many MTAs will add one if it's not present (in Postfix, this is > determined by $always_add_missing_headers).
I understand that but these are spammers who seem to be stupid and are trying to obfuscate themselves at the same time. This little trick only makes it easier since I wouldn't expect legitimate email to arrive with no message-id. > > From a quick test, it looks like the simple pattern: > !~h message-id > > will do what you want. I tested with 'limit', but you should be able to > use this in scores also. Thanks. The doc suggests you can't use ~h in scoring and I think I had a problem with ~h earlier but it should work for the spam command. I'll try it asap. > > Alternatively, if you use a mail filtering tool like procmail or sieve, > you can do some stuff to handle it in there (e.g., adding an > X-Missing-Message-ID: 1 header if the message-id is missing). > > SpamAssassin probably already has a rule for this, so if you're using > this and can control your preferences, you could also increase the > score for that rule. I haven't gotten into any of this because my mailing list memberships are all "self-contained Mutt" using the built-in IMAP and SMTP code and I don't want the complexity of a fullblown mail solution. Thanks. /jl -- ASCII ribbon campaign ( ) Powered by Lemote Fuloong against HTML e-mail X Loongson MIPS and OpenBSD and proprietary / \ http://www.mutt.org attachments / \ Code Blue or Go Home! Encrypted email preferred PGP Key 2048R/DA65BC04
