On Thu, May 20, 2021 at 09:18:56PM +0300, basini...@gmail.com wrote: > Thanks Viktor. > > So to add this "custom smtp transport" do I need to add a section in > main.cf just like "smtp unix", but with a custom "service type" column > and the additional option `-o smtp_host_lookup=native`?
That'd master.cf, and a custom service name. Right now you typicall have: smtp unix ... smtp relay unix ... smtp -o ... you would add: smtp-nondns unix ... smtp -o smtp_host_lookup=native -o disable_dns_lookups=yes Then of course in transport(5): example.com smtp-nondns:[somehost] -- Viktor.