Recent DiscussionsMost RecentNewest TopicsMost LikesSolutionsTagged:TagRe: 554 5.6.0 Permanent error while processing message Alec TORUNCZYK Having the exact same issue. One random user mailbox. 3.5 hours on with MS support still no resolution. I am looking at the outbound filters and rules for my org while I wait for MS to call me back again. Let us know if you get anywhere with this... thanks,
