[Dovecot][Netfilter] Fix dovecot failed login regex

data/conf/dovecot/dovecot.conf

@@ -278,6 +278,7 @@ imap_max_line_length = 2 M
 #auth_cache_negative_ttl = 0
 #auth_cache_ttl = 30 s
 #auth_cache_size = 2 M
+auth_verbose_passwords = sha1:6
 service replicator {
   process_min_avail = 1
 }