On Thu, November 19, 2020 09:47, Al Iverson via mailop wrote: > Test forcing your MTA to send to Gmail over IPv4 instead of IPv6. > Gmail's filtering is much more harsh on IPv6. This has actually bit me > before in the past.
!00% agree. Easy to do with Postfix and probably other MTAs. John Capo Tuffmail.com > > Cheers, > Al Iverson > > > On Thu, Nov 19, 2020 at 8:11 AM Stuart Henderson via mailop > <mailop@mailop.org> wrote: > >> >> On 2020/11/19 13:47, Paul Waring via mailop wrote: >> >>> On Thu, Nov 19, 2020 at 01:29:48PM +0000, Chris Woods wrote: >>> >>>> I dropped the TTL on the MX, SPF, DKIM and DMARC records to 300 about 36 >>>> hours before starting the migration, and published the new DKIM key as >>>> well. I left the >>>> records at 300 for about 72 hours after the migration and then moved them >>>> up to 3600. >>>> >>>> >>>> Correct the PTR, it's currently "romana.vs.mythic-beasts.com". >>>> >>> >>> I'm not sure what's wrong about the PTR? >>> >>> >>> 1. The hostname of the machine is romana.vs.mythic-beasts.com >>> >>> >>> 2. The hostname used in HELO is romana.vs.mythic-beasts.com >>> >>> >>> 3. The MX record for xk7.net is romana.vs.mythic-beasts.com >>> >>> >>> 4. romana.vs.mythic-beasts.com has an A record and AAAA record >>> >>> >>> 5. The IP addresses in the A & AAAA records have PTR records to >>> romana.vs.mythic-beasts.com >>> >>> Isn't that the correct way to have things? >>> >> >> That all looks right. >> >> >> No idea how things work in gmail with keys, but it may be better to >> use the original DKIM key? That would provide some kind of continuity >> original from th server/IP >> to the new one, whereas now you have new IP *and* new key at the same time. >> >> >> If you're sending into them over v6 I would disable that too, >> most of the common open source MTAs have a feature to prevent sending over >> v6 exactly because of >> gmail. >> >> _______________________________________________ >> mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop >> > > > > -- > Al Iverson // Wombatmail // Chicago > Song a day! https://www.wombatmail.com > Deliverability! https://spamresource.com > And DNS Tools too! https://xnnd.com > _______________________________________________ > mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop > > _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
