Most of the times WHM and Cpanel ports are disabled by sysadmins for security reasons. There are several ways to login to WHM and Cpanel without specifying a port. You may add the 'whm' right after the domain name or use it as a subdomain.
Secured SSL connection to WHM:
https://domain.com/whm
https://whm.domain.com
https://domain.com:2087
Regular connection to WHM:
http://domain.com/whm
http://whm.domain.com
http://domain.com:2086
Secured SSL connection to CPanel:
https://domain.com/cpanel
https://cpanel.domain.com
https://domain.com:2083
Regular connection to WHM:
http://domain.com/cpanel
http://cpanel.domain.com
http://domain.com:2082
; "Mostly Harmless")
; "Dragonball Evolution Movie")
; "Life the Universe and Everything")
; "The Restaurant at the End of the Universe")
; "the-ultimate-hitchhikers-guide-to-the-galaxy.jpg")
; "Angels And Demons")
; "StarCraft: Brood War")
; "Eagle Eye")
; "Linksys Compact Wireless G USB")
; "We Sing, We Dance, We Steal Things")
In many cases, I have experienced that standard SMTP port 25 has been blocked by users ISP. Due to this your users may not be able to send/receive emails from their email clients.
This will be a very helpful information for the regular users.
Jenny @ kamisori shears
Useful information.. Thanks for sharing buddy! Angeline @ unlock iphone