I've just done a rough deliverability test to postmaster@TLD for the TLDs with MX records. This just checks that the RCPT TO command is accepted. The results show that even if your site will let you send mail to these domains, it still mostly won't work.
ai mail.offshore.ai. OK ax mail.aland.net. BAD cf mail.intnet.cf. BAD dm mail.nic.dm. BAD gp ns1.nic.gp. BAD gp ns1.worldsatelliteservices.com. BAD gt ASPMX.L.GOOGLE.COM. BAD gt ALT1.ASPMX.L.GOOGLE.COM. BAD gt ALT2.ASPMX.L.GOOGLE.COM. BAD gt ASPMX2.GOOGLEMAIL.COM. BAD gt ASPMX3.GOOGLEMAIL.COM. BAD gt ASPMX4.GOOGLEMAIL.COM. BAD gt ASPMX5.GOOGLEMAIL.COM. BAD hr alpha.carnet.hr. OK io mailer2.io. BAD kh ns1.dns.net.kh. BAD km mail1.comorestelecom.km. OK lk malithi-slt.nic.lk. BAD lk malithi-lc.nic.lk. BAD mq mx1-mq.mediaserv.net. BAD pa ns.pa. BAD tt ASPMX.L.GOOGLE.COM. OK tt ALT1.ASPMX.L.GOOGLE.COM. OK ua mr.kolo.net. BAD va raphaelmx1.posta.va. BAD va raphaelmx2.posta.va. BAD va raphaelmx3.posta.va. BAD ws mail.worldsite.ws. BAD ye mail.yemen.net.ye. BAD Similar results for fallback-to-a: ac BAD ai OK cm BAD dk BAD gg BAD io BAD je BAD kh BAD pn BAD sh BAD tk BAD tm BAD to BAD uz BAD vi BAD ws BAD and fallback-to-aaaa: dk BAD Tony. -- f.anthony.n.finch <[email protected]> http://dotat.at/ Forties, Cromarty: East, veering southeast, 4 or 5, occasionally 6 at first. Rough, becoming slight or moderate. Showers, rain at first. Moderate or good, occasionally poor at first. _______________________________________________ DNSOP mailing list [email protected] https://www.ietf.org/mailman/listinfo/dnsop
