• Debian 11 is approaching its end-of-life (vendor EOL date - August 31, 2026). Plesk Obsidian 18.0.80 will be the last release to support it.
    If you are running Plesk Obsidian on Debian 11, we recommend you upgrade those servers to Debian 12 using our dist-upgrade tool.
  • We plan to deprecate and remove the support for XML RPC protocol versions earlier than 1.6.9.1 in Plesk Obsidian 18.0.82. We strongly recommend that you update all existing integrations using earlier versions of the XML RPC protocol to comply with the version 1.6.9.1 specification.

Plesk and Hosted Exchange

MarioP

New Pleskian
Hi guys,

I recently updated to Plesk 9.3. I have a Microsoft Online Services account with 5 Exchange email addresses linked to one of the domains on the Plesk. The domain has been verified by Microsoft and communication between Exchange accounts @domain.co.uk is working correctly.

However, when I send an email from an IMAP account on the same domain to one of the Exchange accounts I get an error message saying: Could not send message to SMTP server. Check that you have access to send messages via the server and that all To/CC/BCC addresses are valid. Error: SMTP server rejected email. Returned 550 5.1.1. Receipient address rejected: User unknown in virtual mailbox table.

I need to know if there's any way to have these emails delivered to the propper service.

Any help will be much appreciated. Thanks!
 

Attachments

  • atmail error.png
    atmail error.png
    10.2 KB · Views: 5
IgorG thanks for the reply. I just changed the setting and now I just get a bounce back and the email never gets to the Exchange server. I also tried creating the same account on the Plesk but without a mailbox and with that, obviously, emails just disappear.

Any other suggestions?
 
Back
Top