On 19.10.22 18:21, Gellner, Oliver via mailop wrote:
It looks more like t-online.de blocks incoming connections from the whole world, except from a list of IP addresses they maintain internally. To get added to this list you have to a) contact them manually and b) fulfill arbitrary rules that t-online.de set up.
Yepp, that is my understanding and how it felt when talking to the tosa-people to get my server(s) whitelisted.
If only 10% of all ESPs in the world would act like this and require manual requests so that one MTA can talk to another MTA, email would be unusable.
True. But if you are the biggest fish in the (German) pond (which, from your point of view, belongs to you anyway), maybe you try to make these kind of one-sided rules? And unless really challenged, why change a working setup? -kai _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
