I have the same problem since few days.
the strange thing is that I see a messageID on the emails so I don't understand what's wrong...
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- Sat Aug 06, 2022 11:49 am
- Forum: Error Reports and Issues
- Topic: [SOLVED] Messages missing a valid messageId header are not\n5.7.1 accepted.
- Replies: 6
- Views: 9989