Symptoms
- The server was upgraded to Plesk Obsidian;
- Before the upgrade, there was domain without hosting, only email accounts, that were accessed through webmail via HTTP.
- After the upgrade, webmail is redirected to HTTPS as a result webmail shows invalid ssl warning.
Cause
This is Plesk bug with ID PPPM-11114, which is planned to be fixed in one of the future product updates.
Follow the article to be notified when the bug is fixed - the article will be updated.
Workaround
- Log into Plesk.
- Switch on hosting: go to Domains > example.com > Hosting settings > click Change and set Hosting type to Website hosting ;
- Install the certificate for webmail according to the article How to secure webmail using Let's Encrypt in Plesk Onyx;
- Switch off hosting: go to Domains > example.com > Hosting settings > click Change and set Hosting type to No web hosting.
Comments
3 comments
Thanks for understand the issue and workaround.
The 3. step in the descriptions linked to by How to secure webmail using Let's Encrypt in Plesk Onyx it says "Obtain a new Let's Encrypt certificate going to Domains > example.com > Let's Encrypt > Make sure the option Secure webmail on this domain is enabled > Click on Install:"
In my Obsidian version 18.0.21 Update 3 there is no "Let's Encrypt" entry (the Let's Encrypt Extension is installed and activated for the domain), just a "SSL/TLS certificates" entry. Within that there's the domain SSL (including WWW.*) enabled and the wildcard *.domain.tld not enabled. Under "Advanced Settings" one can enabled "Secure Webmail" and "Secure Mail" (and it is), but it still doesn't work.
Any other workarounds? Thanks.
Hi,
Under "SSL/TLS certificates" select "Get it free" from let's encrypt and renew certificate with active checkbox "Secure webmail on this domain"
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