Dnia 24.03.2023 o godz. 08:24:20 Renaud Allard via mailop pisze: > > I would say, that's called greylisting. But with a changing > envelope, the message has no chances to pass any greylisting > process. The behaviour from mailgun would make them unable to pass > any kind of greylisting anywhere.
There are quite a few senders that do this. Some greylisting software (like postgrey, which is probably the reference implementation for greylisting) by default exempt from greylisting a bunch of senders that do this. Among them are amazon.com, google.com, microsoft.com and orange.fr for example. I have myself added facebook.com and amazonses.com to my exempt list as I noticed the same behavior with them. Probably you need to do the same for mailgun. -- 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
