Hello Timo,

I'm having a problem with mbox that opening folder is slow when new mails are delivered to a folder. I'm delivering through the deliver program. Deliver updates index files but IHMO not completely correct. Therefore I compared index files before and after: 1.) Just delivered 2.) After accessing through imap via Thunderbird

diff looks like (stripped down to the relevant things): INDEX: -first recent uid ......... = 25847 +first recent uid ......... = 25848 -log file tail offset ..... = 16468 -log file head offset ..... = 16468 +log file tail offset ..... = 16828 +log file head offset ..... = 16828

• • sync_mtime . = 2012-08-30 19:38:05

• • sync_mtime . = 2012-08-30 20:09:23

• • dirty_flag . = 1

• • dirty_flag . = 0

• • highest_modseq = 11162

• • highest_modseq = 11163

• • log_offset ... = 16468

• • log_offset ... = 16828 CACHE: -used_file_size ....... = 6385696 +used_file_size ....... = 6392132 RECORD: seq=25663, uid=25835, flags=0x00

• • ext 0 keywords : (0000)
• • ext 1 modseq : 11156 (942b000000000000)

• • ext 0 keywords : (0100)
• • ext 1 modseq : 11163 (9b2b000000000000)
  • ext 2 mbox : 42923286 (16f58e0200000000)

• • ext 3 cache : 0 (00000000)

• • ext 3 cache : 6385696 (20706100)
  • ext 4 header-md5: (00000000000000000000000000000000)
• • cache offset=6385696 size=488, prev_offset = 0
• • hdr.BCC:
• • hdr.CC:
• • hdr.CONTENT-TYPE: 18: Content-Type: text/plain; charset=us-ascii
• • hdr.DATE: 13: Date: Thu, 30 Aug 2012 19:37:24 +0200 <some other hdr.xxxxx lines removed>
• • size.virtual: 1081 (3904000000000000)

Same patterns from record: 25664-25675

What does dirty_flag=1 mean? Why are the cache headers missing and not written by deliver?

Any ideas?

Config is below.

Thank you.

Ciao, Gerhard

# 2.1.9: /etc/dovecot/dovecot.conf # OS: Linux listen = * mail_full_filesystem_access = yes mail_location = mbox:~:INBOX=/var/mail/%u mbox_lazy_writes = no mbox_write_locks = fcntl passdb { driver = pam } postmaster_address = postmaster@domain protocols = imap service auth { unix_listener auth-userdb { group = users mode = 0660 } } service imap-login { inet_listener imap { port = 0 } } service imap { executable = imap postlogin } service postlogin { executable = script-login -d rawlog } ssl_cert =