[Pkg-exim4-users] SPF Support / SUPPORT_SPF

[Ian Kelling]

Kai Bojens via Pkg-exim4-users <pkg-exim4-users at alioth-lists.debian.net> writes:

> Is there any reason why exim is build without SUPPORT_SPF? Using the 
> spf-query-tools means that for every SPF request one Perl interpreter is 
> started which leads to a rather heavy load when spammers are sending 
> massive amounts of mails in parallel. I'd prefer to use the builtin SPF 
> check and not run a Perl Interpretet for every mail I receive.
>

There is at least one reason, upstream marked it as an "experimental"
feature. Trisquel exim builds have SPF support turned on. At fsf we've
been using it on gnu/nongnu mailing lists (in conjunction with the dmarc
build option) for a few years, handling millions of messages and it has
worked well.

-- 
Ian Kelling | Senior Systems Administrator, Free Software Foundation
GPG Key: B125 F60B 7B28 7FF6 A2B7  DF8F 170A F0E2 9542 95DF
https://fsf.org | https://gnu.org