Aug 12 10:26:58 mail dovecot: auth: mysql: Connected to localhost (postfix)
Aug 12 10:26:58 mail dovecot: pop3-login: Login: user=test0@long.com, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=3008, secured
Aug 12 10:26:58 mail dovecot: pop3(test0@long.com): Error: user test0@long.com: Initialization failed: Initializing mail storage from mail_location setting failed: mkdir(/var/vmail/long.com/test0/Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /var/vmail, euid is not dir owner)
Aug 12 10:26:58 mail dovecot: pop3(test0@long.com): Error: Invalid user settings. Refer to server log for more information.