Dnia 13.09.2023 o godz. 02:52:59 Jarland Donnell via mailop pisze: > > It's my finding that at scale, there's no silver bullet to ensure > that 100% of emails you forward are going to be accepted by Google, > or anyone really. That's why anyone who considers their inbox > mission critical needs to rely on their inbox provider, and not a > third party accepting email from their inbox provider.
There's one simple solution that can be quite easily adopted by mailbox providers. If someone forwards mail to his/her account, they obviously know *from where* they forward mail. So allow your user to specify a list of IP addresses of servers from where the mail is forwarded. Email from these servers to that particular user will be exempt from SPF/DKIM/DMARC checks. (If the user doesn't know the IP address from which the mail is sent, he/she can probably easily find someone who knows, at the site from where the forward originates.) -- Regards, Jaroslaw Rafa r...@rafa.eu.org -- "In a million years, when kids go to school, they're gonna know: once there was a Hushpuppy, and she lived with her daddy in the Bathtub." _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
