On Fri, 2019-05-31 at 11:03 +0000, Stefan Bauer via mailop wrote: > Hi Ken, > > thanks again for your input. Regarding > Add a custom header (X-abuse) > > is this really a thing? Could not find many mails in my inbox with that > header present at all nor any official recommendations about that. > Stefan
Hi Stefan, Yes, it is fairly popular with ESPs (X-Report-Abuse, X-Complaints-To are fairly common sights). Also web hosting providers and commercial SMTP services (like you) tend to add a few custom headers to identify specific subscribers. It's not universal by any means but I'd recommend it for the service you're offering. And, to to be fair, RFC 6648 (which is a best practice not a standard) depreciates the use of the "X-" prefix in favour of general meaningful custom headers (e.g. Complaints-To) so doing that is probably better. Does that answer your question? Ken. _______________________________________________ mailop mailing list [email protected] https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
