diff options
Diffstat (limited to 'README')
| -rw-r--r-- | README | 20 |
1 files changed, 15 insertions, 5 deletions
@@ -23,11 +23,14 @@ the last synchronization only gives a phenomenal performance boost and drastically reduces the network traffic. For convenience reasons servers must also support LIST-EXTENDED -[RFC5258], LIST-STATUS [RFC5819] and UIDPLUS [RFC4315]. Furthermore, -while InterIMAP can work with servers lacking support for LITERAL+ -[RFC2088] and MULTIAPPEND [RFC3502], these extensions greatly improve -performance by reducing the number of required round trips hence are -recommended. +[RFC5258], LIST-STATUS [RFC5819] and UIDPLUS [RFC4315]. Other supported +extensions are: + * LITERAL+ [RFC2088] non-synchronizing literals (recommended), + * MULTIAPPEND [RFC3502] (recommended), + * COMPRESS=DEFLATE [RFC4978] (recommended), + * SASL-IR [RFC4959] SASL Initial Client Response, + * UNSELECT [RFC3691], and + * BINARY [RFC3516]. ####################################################################### @@ -71,6 +74,13 @@ type=imaps. remote: ~user/.ssh/authorized_keys: command="/usr/lib/dovecot/imap",no-agent-forwarding,no-port-forwarding,no-pty,no-user-rc,no-X11-forwarding ssh-... id-interimap +However for long-lived connections (using the --watch command-line +option), the TLS overhead becomes negligible hence the advantage offered +by the OpenSSH ControlPersist feature is not obvious. Furthermore if +the remote server supports the IMAP COMPRESS extension [RFC4978], adding +compress=DEFLATE to the configuration can also greatly reduce bandwidth +usage with regular INET sockets (type=imaps or type=imap). + ####################################################################### |