Hm,
From your config, it's clear that the rate limiting for user-logins and ip-logins is turned off. The only other use to which memcached is put, by NGINX POP/IMAP proxy, is to cache the POP/IMAP routes of users.
Do all POP accounts face the problem of logging in ? If so, can you please paste the relevant section of nginx.log ? Also, if it is specific to a single mailbox only, was the mailbox moved from one mailhost to another ?
Regards,
Mansoor |