I've got too many errors on my mail server like this:

Nov 3 12:03:13 mail01 dovecot[5562]: imap-login: Error: auth-client: conn unix:login (pid=5553,uid=0): Authentication server sent unknown id 2965 Nov 3 12:03:13 mail01 dovecot[5562]: imap-login: Error: auth-client: conn unix:login (pid=5553,uid=0): Authentication server sent unknown id 2966 Nov 3 12:03:13 mail01 dovecot[5562]: imap-login: Error: auth-client: conn unix:login (pid=5553,uid=0): Authentication server sent unknown id 2967 Nov 3 12:03:13 mail01 dovecot[5562]: imap-login: Error: auth-client: conn unix:login (pid=5553,uid=0): Authentication server sent unknown id 2084 Nov 3 12:03:13 mail01 dovecot[5562]: imap-login: Error: auth-client: conn unix:login (pid=5553,uid=0): Authentication server sent unknown id 1972

And my users say that login to the mail server is too long. In some cases I've got an error connection problem. How do I fix this?

BR, DeJa

I've got too many errors on my mail server like this:

Nov  3 12:03:13 mail01 dovecot[5562]: imap-login: Error: auth-client: conn unix:login (pid=5553,uid=0): Authentication server sent unknown id 2965 Nov  3 12:03:13 mail01 dovecot[5562]: imap-login: Error: auth-client: conn unix:login (pid=5553,uid=0): Authentication server sent unknown id 2966 Nov  3 12:03:13 mail01 dovecot[5562]: imap-login: Error: auth-client: conn unix:login (pid=5553,uid=0): Authentication server sent unknown id 2967 Nov  3 12:03:13 mail01 dovecot[5562]: imap-login: Error: auth-client: conn unix:login (pid=5553,uid=0): Authentication server sent unknown id 2084 Nov  3 12:03:13 mail01 dovecot[5562]: imap-login: Error: auth-client: conn unix:login (pid=5553,uid=0): Authentication server sent unknown id 1972

And my users say that login to the mail server is too long. In some cases I've got an error connection problem. How do I fix this?

BR, DeJa