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davidlv

macrumors 68020
Original poster
Apr 5, 2009
2,291
874
Kyoto, Japan
Running Mojave, latest updates installed, iMac 2014 and Office for Mac 2019.
Outlook logs an error -50, "The message could not be sent because it has unresolved recipients."
The app does seem to work OK, it sends messages and attachments with no issues,
That error is generated on contact with the ISP mail provider. But it does connect, as shown by the fact that mail arrives and is sent correctly.
In the Outlook preferences, all the ports specified by the ISP are entered correctly.
The user name may be the problem, and I will try to resolve this issue by changing the name in the Outlook preferences.
Any other ideas? And what does error -50 mean?
 
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