hi,

we have 2.0.13 running and most works well, but today we had some minor problems: The IMAP login process takes sometimes to much time. Over webmail (Roundcube 0.5.0.3) login wasn't sometimes possible, the normal clients hasn't any problems, until they login.

We had only ~ 20-30 active accounts, but 50-60 sessions. The most are Apple products (Ip*/Mac/. ..)because they have 4 sessions or more open.

Also we had ~212 processes with:

dovenull 2065 4364 0 14:50:32 ? 0:00 dovecot/imap-login vmail 2403 4364 0 14:58:31 ? 0:00 dovecot/imap

So, maybe, it's a miss configuration .... Any suggestions are welcome for 500-1000User per day.

Our System is a Sun Sunfire X4250 with 16GB memory on Raidz1

Most settings are defaults, so I posting only my changes:

# doveadm -N

# 2.0.13: /usr/local/dovecot/etc/dovecot/dovecot.conf # OS: SunOS 5.10 i86pc zfs auth_cache_negative_ttl = 1 hours auth_cache_ttl = 1 hours auth_debug = yes auth_mechanisms = plain auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@ auth_username_format = %Lu auth_verbose = yes auth_verbose_passwords = no base_dir = /var/run/dovecot debug_log_path = /var/log/dovecot-debug.log default_login_user = dovenull default_process_limit = 100 disable_plaintext_auth = no hostname = hostname.fomain.foo info_log_path = /var/log/dovecot.log lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = no lda_original_recipient_header = login_greeting = I'm alive mail_debug = yes mail_gid = vmail mail_home = /imap/spool/%d/%1n/%n mail_location = maildir:/imap/spool/%d/%1n/%n:INDEX=/imap/spool/% d/indexes/%1n/%n mail_plugin_dir = /usr/local/dovecot/dovecot2/lib/dovecot/ mail_plugins = acl quota fts fts_squat mail_privileged_group = vmail mail_temp_dir = /imap/spool/tmp mail_uid = vmail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date imapflags namespace { hidden = no inbox = yes location = prefix = separator = / subscriptions = yes type = private } namespace { inbox = no location = maildir:/imap/spool/public prefix = public/ separator = / subscriptions = no type = public } passdb { args = /usr/local/dovecot/etc/dovecot/conf.d/dovecot-ldap.conf.ext driver = ldap } passdb { args = scheme=plain-md5 username_format=% Lu /usr/local/dovecot/etc/dovecot/other-users driver = passwd-file } plugin { acl = vfile:/imap/spool/%d/acl autocreate = Sent autocreate2 = Drafts autocreate3 = Trash autocreate4 = Spam autosubscribe = Sent autosubscribe2 = Drafts autosubscribe3 = Trash autosubscribe4 = Spam fts = squat fts_squat = partial=4 full=10 quota = maildir:User quota quota_rule2 = Trash:storage=+10%% quota_rule3 = Spam:storage=+20%% quota_warning = storage=80% % /usr/local/dovecot/dovecot2/bin/quota-warning.sh 80 quota_warning2 = storage=90% % /usr/local/dovecot/dovecot2/bin/quota-warning.sh 90 quota_warning3 = storage=95% % /usr/local/dovecot/dovecot2/bin/quota-warning.sh 95 sieve = /imap/spool/%d/%1n/%n/sieve/default.sieve sieve_dir = /imap/spool/%d/%1n/%n/sieve sieve_extensions = +imapflags trash = /usr/local/dovecot/etc/dovecot/conf.d/dovecot-trash.conf } postmaster_address = postmaster@domain.foo protocols = imap pop3 lmtp sieve recipient_delimiter = + rejection_reason = Your message to <%t> was automatically rejected:%n%r rejection_subject = Rejected: %s service auth { unix_listener /var/spool/postfix/private/auth { group = postdrop mode = 0600 user = postfix } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } process_min_avail = 8 vsz_limit = 1 G } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postdrop mode = 0666 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } inet_listener sieve_deprecated { port = 2001 } } service pop3-login { inet_listener pop3 { port = 110 } inet_listener pop3s { port = 995 ssl = yes } } ssl_cert =