Hi, we just enabled email ratelimiting in our MTA server [0] in Toolforge. Please, report any problem or issue you may find related to this. The current limit is 100 messages per hour per sender address. We may tune the value as we observe the behavior of the system and the users. regards. [0] https://en.wikipedia.org/wiki/Message_transfer_agent -- Arturo Borrero Gonzalez SRE / Wikimedia Cloud Services Wikimedia Foundation _______________________________________________ Wikimedia Cloud Services announce mailing list Cloud-announce(a)lists.wikimedia.org (formerly labs-announce(a)lists.wikimedia.org) https://lists.wikimedia.org/mailman/listinfo/cloud-announce