Ever see this error while in Plesk:
Failed setting of domain parameters: Cannot change Webmail on domain: webmail
So in between making domains in my plesk, i decided to update plesk core files. Well it didn’t tell me there was a file dependency. So I updated core files, tried to make another domain and I kept getting this error. After searching a bit, and concluding nothing from these searches i went back, deleted all my domains and accounts and started creating new domains. Which still gave me this error.
After sifting through plesk’s interface a while i realized the Latest Release Dates on Base packages of Plesk and Horde webmail support were the same. I didn’t have the newest version of Horde webmail support installed. So I installed the new version of Horde webmail support and all was well.