Login to Webmail fails after choosing Horde, RoundCube or SquirrelMail

Jim M

Registered
PartnerNOC
Oct 20, 2015
3
0
51
Phoenix
cPanel Access Level
DataCenter Provider
I am seeing odd behavior with regard to all email addresses for one domain on a VPS - other domains on the server seem not to be affected.

I can log in to the external Webmail interface without an issue, but when I then click on Horde, RoundCube or SquirrelMail, issues start.

Horde lets me in, but there's an error message, "User [email protected] is not authorized for Mail (Host: [12.34.56.78])". SquirrelMail takes me to an error page "Please log in first". RoundCube takes me to a login page. Neither of those will then let me log in.

Not seeing anything of significance in /var/log/messages or /usr/local/cpanel/logs/error_log or access_log.

This is running 11.52.0 (build 22)
 

Jim M

Registered
PartnerNOC
Oct 20, 2015
3
0
51
Phoenix
cPanel Access Level
DataCenter Provider
Yes, this was logging into a single email account, with the full email address.

However, we appear to have found the solution. The hostname on the server had been set to the domain name in question, rather than something like mail.userdomain.com, and this appears to have been causing a clash. We updated it, and could then log in without issue. Figured it was worth sharing!