- Merged by Amy.WangMicrosoft contingent staff, Moderator 9 hours 36 minutes ago duplicated thread
Hi,
According to your description, I understand that mail stay in Draft folder and cannot be delivered while send message for internal mail flow.
If I misunderstand your concern, please do not hesitate to let me know.
How about the OWA? Please try to login OWA and test internal mail flow.
If you have the same problem, it seems that something wrong with Exchange server, for example send connector or receive connector, transport service.
Besides, please try to run Test-MailFlow or Telnet to test the communication of Exchange server. More details about
Troubleshooting Mail Flow and SMTP, for your reference:
https://technet.microsoft.com/en-us/library/aa996805(v=exchg.65).aspx
If it works in OWA, it indicate that the problem is related to Outlook client. Please try to run Outlook with safe mode or re-create a profile for testing.
Best Regards,
Allen Wang
- Edited by Peter Gomes II 5 hours 25 minutes ago