Issue 421 Misdirected Request, Activesync no longer working

[Compy]

Server operating system version

os_Ubuntu 22.04

Plesk version and microupdate number

Obsidian v18.0.71_build1800250704.07

So after the Misdirected Request, the sites are up but Outlook cant connect with Activesync.
Imap works.

Using Plesk Premium Email, Postfix, Dovecot

 

[Compy]

The error started at the same time as Misdirected Request, the server has since been updated to v18.0.71

 

[scsa20]

It's probably related to the apache change that the plesk team is working on releasing an actual patch but for now there is a work on.

Refer to this post:

Issue - 421 Misdirected Request

for fix CVE-2025-23048 the SSLStrictSNIVHostCheck directive is now enabled by default and proxy must send host to apache

talk.plesk.com

https://support.plesk.com/hc/en-us/articles/33500191748887-Websites-hosted-in-Plesk-are-not-accessible-after-a-recent-Apache-update-421-Misdirected-Request

 

[Compy]

It's probably related to the apache change that the plesk team is working on releasing an actual patch but for now there is a work on.

Refer to this post:

Issue - 421 Misdirected Request

for fix CVE-2025-23048 the SSLStrictSNIVHostCheck directive is now enabled by default and proxy must send host to apache

talk.plesk.com

https://support.plesk.com/hc/en-us/articles/33500191748887-Websites-hosted-in-Plesk-are-not-accessible-after-a-recent-Apache-update-421-Misdirected-Request

Thanks @scsa20! You are a hero, my head hurts like hell after this day.

Also found that a lot of updates for kolab and roundcubemail were stuck. Nothing you could see in the control panel.