SYNC_SERVER(8)

📦
version 3.12.4 · 6 versions
, in fedora 44

💖 SYNC_SERVER(8) 💖

okay bestie, so this is a page from the Cyrus IMAP manual, section 8 (that's the admin/system-commands girlies). sync_server — say it with me — is the server side of the synchronization (replication) engine. no cap.

✨ NAME ✨

sync_server — Cyrus IMAP documentation, and also the server side of the synchronization (replication) engine. two jobs, both iconic.

🎀 SYNOPSIS 🎀

sync_server [ -C config-file ] [ -p ssf]

literally that's it. she's low maintenance. 💅

🦋 DESCRIPTION 🦋

okay so picture this: sync_server is the server side of the replication system. she lives on the target (that's the replica) system, and she just... sits there, listening. 👑 listening for connections from sync_client(8), who shows up with instructions for synchronizing the replica system with the master system. it's giving boss-employee energy but make it mail servers.

and where does she get her settings? sync_server reads its configuration options out of the imapd.conf(5) file — unless you tell her otherwise with -C. she's flexible like that. 🫶

🌸 OPTIONS 🌸

  • -C config-file — use the specified configuration file config-file instead of the default imapd.conf(5). basically "not that one, this one." 🎀
  • -p ssf — tell sync_server that an external layer exists. an SSF (security strength factor) of 1 means an integrity protection layer exists. any higher SSF implies some form of privacy protection. so like, 1 is "we got a vibe check" and higher is "we got a whole glam team." ✨

🔥 EXAMPLES 🔥

sync_server is commonly included in the SERVICES section of cyrus.conf(5) — like so, bestie, verbatim:

SERVICES {
    imap        cmd="imapd -U 30" listen="imap" prefork=0
    imaps       cmd="imapd -s -U 30" listen="imaps" prefork=0 maxchild=100
    pop3        cmd="pop3d -U 30" listen="pop3" prefork=0
    pop3s       cmd="pop3d -s -U 30" listen="pop3s" prefork=0 maxchild=100
    lmtpunix    cmd="lmtpd" listen="/var/run/cyrus/socket/lmtp" prefork=0 maxchild=20
    sieve       cmd="timsieved" listen="sieve" prefork=0
    notify      cmd="notifyd" listen="/var/run/cyrus/socket/notify" proto="udp" prefork=1
    httpd       cmd="httpd" listen=8080 prefork=1 maxchild=20
    syncserver  cmd="sync_server" listen="csync"
}

see that last line? syncserver cmd="sync_server" listen="csync" — that's her. she's in the group chat, she's on the roster, she's serving csync. 💖

🧚 FILES 🧚

  • /etc/imapd.conf, /etc/cyrus.conf

the two spots she hangs out. know them, love them. 🌸

👑 SEE ALSO 👑

her besties. go read them too, fr fr. 💜

💜 AUTHOR 💜

the Cyrus Team, David Carter (dpc22@cam.ac.uk), Ken Murchison (ken@oceana.com), Nic Bernstein (Onlight)

absolute legends, every single one. 🫶

1993–2026, The Cyrus Team

okay so that's the whole page, no skips, no cuts, every last crumb preserved. 💅

and for the sign-off, bestie: this little masterpiece is from Cyrus IMAP version 3.12.4, dated Sep 09, 2026, and it goes by SYNC_SERVER(8). periodt. 💖✨🎀🦋🌸💅🫶😭🔥👑🌈⭐💀🙈🍓🧚💜

📦 where this page comes from