me@mx:~$ ll -d /mnt
drwxr-xr-x 3 root root 4096 Mar 25 18:39 /mnt/
The log error pops up when I click the inbox for any user in Roundcube with every user in the system. The screen message and the imap log I've posted here.
But going through the process of sending an email from one user on the system (specifically larry to sophos) to another results in this in the imap.log
Mar 30 12:59:16 mx dovecot: imap-login: Login: user=<larry@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=29869, secured, session=<bmfmOFWFXuF/AAAB>
Mar 30 12:59:16 mx dovecot: imap(larry@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/l/a/r/larry-2019.03.26.03.53.36//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 12:59:16 mx dovecot: imap(larry@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/l/a/r/larry-2019.03.26.03.53.36//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 12:59:16 mx dovecot: imap-login: Login: user=<larry@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=29871, secured, session=<xuXmOFWFZOF/AAAB>
Mar 30 12:59:16 mx dovecot: imap(larry@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/l/a/r/larry-2019.03.26.03.53.36//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 12:59:16 mx dovecot: imap(larry@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/l/a/r/larry-2019.03.26.03.53.36//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 12:59:30 mx dovecot: imap-login: Login: user=<larry@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=29879, secured, session=<+za5OVWFlOF/AAAB>
Mar 30 12:59:30 mx dovecot: imap(larry@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/l/a/r/larry-2019.03.26.03.53.36//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 12:59:30 mx dovecot: imap(larry@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/l/a/r/larry-2019.03.26.03.53.36//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 12:59:30 mx dovecot: imap-login: Login: user=<larry@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=29883, secured, session=<Jye9OVWFnuF/AAAB>
Mar 30 12:59:30 mx dovecot: imap-login: Login: user=<larry@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=29884, secured, session=<2je9OVWFoOF/AAAB>
Mar 30 12:59:30 mx dovecot: imap(larry@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/l/a/r/larry-2019.03.26.03.53.36//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 12:59:30 mx dovecot: imap(larry@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/l/a/r/larry-2019.03.26.03.53.36//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 12:59:30 mx dovecot: imap(larry@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/l/a/r/larry-2019.03.26.03.53.36//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 12:59:30 mx dovecot: imap(larry@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/l/a/r/larry-2019.03.26.03.53.36//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
And from sophos to larry:
Mar 30 13:06:18 mx dovecot: imap-login: Login: user=<sophos@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=30033, secured, session=<r4QOUlWFdOZ/AAAB>
Mar 30 13:06:18 mx dovecot: imap(sophos@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 13:06:18 mx dovecot: imap(sophos@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 13:06:18 mx dovecot: imap-login: Login: user=<sophos@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=30035, secured, session=<TgwPUlWFeuZ/AAAB>
Mar 30 13:06:18 mx dovecot: imap(sophos@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 13:06:18 mx dovecot: imap(sophos@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 13:06:19 mx dovecot: imap-login: Login: user=<sophos@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=30037, secured, session=<04sSUlWFgOZ/AAAB>
Mar 30 13:06:19 mx dovecot: imap(sophos@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 13:06:19 mx dovecot: imap(sophos@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 13:06:19 mx dovecot: imap-login: Login: user=<sophos@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=30039, secured, session=<HJ4SUlWFhuZ/AAAB>
Mar 30 13:06:19 mx dovecot: imap(sophos@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 13:06:19 mx dovecot: imap(sophos@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 13:06:23 mx dovecot: imap-login: Login: user=<sophos@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=30042, secured, session=<z55VUlWFmOZ/AAAB>
Mar 30 13:06:23 mx dovecot: imap(sophos@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 13:06:23 mx dovecot: imap(sophos@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 13:06:23 mx dovecot: imap-login: Login: user=<sophos@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=30044, secured, session=<+f9VUlWFnuZ/AAAB>
Mar 30 13:06:23 mx dovecot: imap(sophos@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 13:06:23 mx dovecot: imap(sophos@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 13:06:42 mx dovecot: imap-login: Login: user=<sophos@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=30065, secured, session=<27Z8U1WFAud/AAAB>
Mar 30 13:06:42 mx dovecot: imap(sophos@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 13:06:42 mx dovecot: imap(sophos@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 13:06:43 mx dovecot: imap-login: Login: user=<sophos@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=30067, secured, session=<vIWAU1WFCOd/AAAB>
Mar 30 13:06:43 mx dovecot: imap(sophos@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 13:06:43 mx dovecot: imap(sophos@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 13:06:43 mx dovecot: imap-login: Login: user=<sophos@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=30069, secured, session=<+saAU1WFDud/AAAB>
Mar 30 13:06:43 mx dovecot: imap(sophos@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 13:06:43 mx dovecot: imap(sophos@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 13:07:43 mx dovecot: imap-login: Login: user=<sophos@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=30091, secured, session=<9VgUV1WFuOd/AAAB>
Mar 30 13:07:43 mx dovecot: imap(sophos@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 13:07:43 mx dovecot: imap(sophos@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 13:08:43 mx dovecot: imap-login: Login: user=<sophos@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=30112, secured, session=<DO2nWlWFZOh/AAAB>
Mar 30 13:08:43 mx dovecot: imap(sophos@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 13:08:43 mx dovecot: imap(sophos@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366
Mar 30 13:09:43 mx dovecot: imap-login: Login: user=<sophos@net.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=30172, secured, session=<aog7XlWFDOl/AAAB>
Mar 30 13:09:43 mx dovecot: imap(sophos@net.com): Error: Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755)
Mar 30 13:09:43 mx dovecot: imap(sophos@net.com): Namespace '': mkdir(/mnt/mail/vmail1/net.com/s/o/p/sophos-2019.03.26.04.08.23//Maildir) failed: Permission denied (euid=2000(vmail) egid=2000(vmail) missing +w perm: /mnt/mail, dir owned by 0:0 mode=0755) in=0 out=366