Dnia 7.10.2019 o godz. 10:43:14 Scott Techlist via mailop pisze: > > What about relaying outbound mail via services like Sendgrid? Not sure it > that will make it better, or worse since they send marketing stuff. And > Google probably looking at the source server headers anyway.
Myself I hate Sendgrid, as their sending servers behave in a way that's incompatible with greylisting. I use greylisting on my server and I have to constantly add domains that use Sendgrid to exceptions list, otherwise I can't receive mail from them. The issue is, when a message is greylisted, the greylisting daemon expects that the sending server will retry after a few minutes *from the same IP address*. What Sendgrid does, they retry *immediately* and *from a completely different IP address*, which only causes another entry in the greylisting database to be initiated. After a few such unsuccessful attempts they give up on delivering mail, so it never reaches me as the recipient. Some time ago I tried to contact them about the issue, but it seems that they even don't understand it at all... -- 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://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
