• 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.

Webmail Login + Send problems

kram@

Regular Pleskian
Hello,

Using Roundcube:
No users can login.

Error message:
Invalid request! No data was saved.


Using Horde:
users can login but can not send email.

Error Message:
There was an error sending your message: Failed to open sendmail [/usr/sbin/sendmail] for execution.

Plesk Version: Plesk 11.5.30 Update #9
 
Seems obvious enough - check that you have /usr/sbin/sendmail with proper permissions (that allow execution). You may also want to check webmail logs for additional info (somewhere in /var/log, IIRC).
 
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