Symptoms
After updating past 11.138.0.17, you find that webmail sessions on service subdomains log users out randomly when LiteSpeed is in use. When reviewing session logs for the user in question you see token validation issues:
CONFIG_TEXT: [YYYY-MM-DD HH:MM:SS +0000] info [webmaild] 127.0.0.1 PURGE user@example.com:XXXX badpass [cookie ip check: IP address has changed: IP Address [10.0.0.1] != Current IP Address [127.0.0.1]]
Cause
We have opened an internal case with our developers with case ID CPANEL-58079 to review this behavior further.
Resolution
At this time the best workaround for this behavior is to access Webmail without using the webmail service subdomain, you can do this by using one of the following patterns where "domain.tld" is the domain in question:
CONFIG_TEXT: domain.tld:2096
domain.tld/webmail
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