Dnia 9.07.2024 o godz. 11:53:47 Anne P. Mitchell, Esq. via mailop pisze: > > Receivers don't block email from new IPs by default;
Some certainly do. Perhaps the most known example is T-Online, as mentioned here in another email. It's their official policy. Every new (unknown) sending IP is blocked by default until admin contacts them and asks to be unblocked. I went through this as well. I have no experience with sending mail to AT&T, but from my experience, similar case to T-Online applies to big Russian email service mail.ru (they even have a special web form for unblocking requests to which they provide link in the rejection message, and are handling this very effectively), and in some extent to Microsoft. They also block unknown IPs, although some IP ranges seem to be already unblocked by default. But if you happen not to be in such a range, you get a reject (as it has been reported multiple times on this list) and you have to contact them to be unblocked (usually you need to escalate the request and contact them more than once). So no, *in general* it is not true that "receivers don't block email from new IPs by default". *Most* receivers don't, but they are some who do. -- 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
