Dear All, Well i was using plesk 7.0 with Mail Enable Professional it was working very smoooth. I planed to upgrade my plesk but when it upgrade it, my mail enable stop working, so i reinstalled mail enable again, but still i was facing many mail problems with different accounts. But Mail Enable HTTPMail was not working ( i tried that Port change Thing also which is mention in installation guide. whole day i tried many Things to make it work, but no use, at last i Uninstall whole Plesk, Mail Enable and all components of Plesk. Then Reinstall PLesk 7.5.4 and restore backup file and then it is working with mail enable Standard version. Please guide me weather it can work with mail Enable Professional Version or not, and it it can how i can install Mail Enable Professional .