Hello,
I use dovecot 1.2.15 as an IMAP backend for Horde webmail.
When I enable PLAIN and GSSAPI as authentication mecanisms, it makes Horde very slow.
If I enable only PLAIN it is a lot more fast.
Do you have a clue to solve this issue ? Here is my dovecot.conf :
protocols = imap imaps pop3s managesieve
mail_location = maildir:/ext/spool/imap/%1Mu/%u
first_valid_uid=97 last_valid_uid=97
ssl_cert_file = /usr/local/cert/mailper/cert.pem ssl_key_file = /usr/local/cert/mailper/mail.key ssl_ca_file = /usr/local/cert/mailper/chain.pem
auth_debug = yes disable_plaintext_auth = no
## tuning ## login_process_size = 64 login_max_processes_count = 196 login_max_connections = 384 auth_worker_max_count = 30 ## fin tuning ##
protocol imap { mail_plugins = quota imap_quota ## tuning ## login_processes_count = 4 ## fin tunning ## }
protocol pop3 { mail_plugins = quota ## tuning ## login_processes_count = 3 ## fin tunning ## } auth_cache_size = 4096 auth_cache_ttl = 1800
protocol lda { mail_plugins = quota sieve postmaster_address = root@example.fr } protocol managesieve { listen = *:2000 }
mail_uid = vmail mail_gid = vmail
auth_krb5_keytab = /etc/dovecot/keytab/pop-imap.mail.keytab
auth default { socket listen { master { path = /var/run/dovecot/auth-master mode = 0600 user = vmail } } mechanisms = plain passdb pam { args = max_requests=50 cache_key=%u%r dovecot } userdb static { args = uid=vmail gid=vmail allow_all_users=yes } user = root }
dict { }
plugin { quota = maildir:User quota quota_rule = *:storage=1G
# The location of the user's active script:
sieve_dir = /ext/spool/sieve/%1Mu/%u
sieve = /ext/spool/sieve/%1Mu/%u/dovecot.sieve}