Hi, for some weeks, the 1&1 invitation/calendar service is being used to transmit spam. As there are some legitimate users, we can't simply block the e-mails identified as coming from this service, so 1&1: Please ix this!
It's just not reasonable to let freshly registered users without a legitimate mail correspondence history send calendar invitations from IP addresses all over the world, there should be a way to detect and stop obviously fraudulent registration and usage patterns. Of course I've reported dozens of these to their abuse address, got no reaction at all. I know that this mailing list is not the place to complain about subjectively insufficient abuse desk handling, but given the recent announcement of implementing DMARC quarantine policies at 1&1 I don't think it's completely unreasonable to expect them to put their own house in order. Cheers, Hans-Martin _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
