To force Plesk to allow use of short names use the following SQL:
1 |
UPDATE misc set val='enabled' where param='allow_short_pop3_names'; |
See this article for details:
http://kb.parallels.com/en/888?st=advc
Also see:
http://rackerhacker.com/2007/08/20/change-plesk-back-to-short-mail-names/
And see for a Plesk 8.4 bug with short names:
http://rackerhacker.com/2008/07/28/plesk-840-unable-to-use-short-names-for-pop3imap/