On 2025-02-19, Aaron Mason <simplersolut...@gmail.com> wrote: > (which is probably fair - individual IPs I can understand, but at the > AS level it reeks of a protection racket)
some AS really are that bad at both attracting, and dealing with, customers sending junk. and sometimes the entire purpose of an AS is to send junk. > - use ipv6 only; or > - ask the recipient not to use that blacklist (the latter in this case > is Google so may the odds be ever in favour of whoever tries that...) first time I ever heard of anyone wanting to use v6 to _improve_ mail deliverability, especially to google. > So let's go with the option I might actually be able to do - can I > force smtpd to send via ipv6? I can't see anything in public > documentation that suggests it's possible. you could run it in a different rtable that only has v6 routes configured, or use pf uid-based block rules. I don't think it will actually help you though. btw, postfix handles the opposite problem (google being super strict on mail received over v6) with a configurable filter on DNS results. -- Please keep replies on the mailing list.
