I have tons of these:
Code:
Mar 08 05:45:50 lmtp(<email>): Error: idM4G25+v1hziQAAE8FBrg: sieve: binary save: failed to create temporary file: open(/var/lib/dovecot/sieve/default.svbin.) failed: Permission denied (euid=1052(<user>) egid=6(mail) missing +w perm: /var/lib/dovecot/sieve, dir owned by 0:0 mode=0755)