Hello everyone- We had an incident where a trusted connection from Microsoft had a nice large dump of spam - it appears that several of their customers were compromised.
We've stopped it, and we're sure it's not going to happen again, but yahoo has listed our IP address blocks with a dreaded "553 5.7.2 [TSS09] All messages from X.X.X.X will be permanently deferred; Retrying will NOT succeed. See https://postmaster.yahooinc.com/error-codes"; I've filed a help request at senders.yahooinc.com, but I'd love if anyone has a contact at yahoo that could help. We've got a lot of schools that have parents with yahoo email addresses, and we really want to get things cleared up with them as quickly as possible. Thanks- Tom _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
