Hi,
I am looking for tools to migrate Mails from one IMAP-Server to another. Until now I have always used imapsync, but it seems very slow. Even over a 2x10GB/s connection I only get speeds of about 600KiB/s, because the programm always pauses betweeen every single mail. Does anyone here have a suggestion for an alternative?
Thanks in advance Julian
On 2019-11-28 10:47 am, Julian Kippels via dovecot wrote:
Hi,
I am looking for tools to migrate Mails from one IMAP-Server to another. Until now I have always used imapsync, but it seems very slow. Even over a 2x10GB/s connection I only get speeds of about 600KiB/s, because the programm always pauses betweeen every single mail. Does anyone here have a suggestion for an alternative?
Take a look at mbsync (isync). Very flexible and quite fast. I've also used offlineimap for a long time.
DC
On 28 Nov 2019, at 18:21, Dean via dovecot dovecot@dovecot.org wrote:
On 2019-11-28 10:47 am, Julian Kippels via dovecot wrote:
Hi, I am looking for tools to migrate Mails from one IMAP-Server to another. Until now I have always used imapsync, but it seems very slow. Even over a 2x10GB/s connection I only get speeds of about 600KiB/s, because the programm always pauses betweeen every single mail. Does anyone here have a suggestion for an alternative?
Take a look at mbsync (isync). Very flexible and quite fast. I've also used offlineimap for a long time.
DC
Here is an .offlineimaprc example :
[general] accounts = main
[Account main] localrepository = dstAccount remoterepository = sourceAccount
[Repository sourceAccount] type = IMAP remotehost = old.server.hostname.com remoteuser = old@example.com remotepass = oldpass ssl = no readonly = true
[Repository dstAccount] type = IMAP remotehost = new.server.hostname.com remoteuser = new@example.com remotepass = newpass ssl = no
Hey,
On 28.11.19 16:47, Julian Kippels via dovecot wrote:
Hi,
I am looking for tools to migrate Mails from one IMAP-Server to another. Until now I have always used imapsync, but it seems very slow. Even over a 2x10GB/s connection I only get speeds of about 600KiB/s, because the programm always pauses betweeen every single mail. Does anyone here have a suggestion for an alternative?
Thanks in advance Julian
If you have full access to the source server you could use rsync or when the source is also dovecot maybe you can even use dsync to transfer the data.
- Carsten
Dovecot’s own dsync.
Your life will now change forever...
On 29 Nov 2019, at 01:48, Julian Kippels via dovecot dovecot@dovecot.org wrote:
Hi,
I am looking for tools to migrate Mails from one IMAP-Server to another. Until now I have always used imapsync, but it seems very slow. Even over a 2x10GB/s connection I only get speeds of about 600KiB/s, because the programm always pauses betweeen every single mail. Does anyone here have a suggestion for an alternative?
Thanks in advance Julian
On 28 Nov 2019, at 17.47, Julian Kippels via dovecot dovecot@dovecot.org wrote:
Hi,
I am looking for tools to migrate Mails from one IMAP-Server to another. Until now I have always used imapsync, but it seems very slow. Even over a 2x10GB/s connection I only get speeds of about 600KiB/s, because the programm always pauses betweeen every single mail. Does anyone here have a suggestion for an alternative?
We use dovecot dsync for migration on our customer projects. It is fast with enough parallelism and we have been able to saturate 10Gbps links. Also it is the only sync tool available that syncs all data including pop3 uidls.
https://wiki2.dovecot.org/Migration/Dsync
Sami
participants (6)
-
Carsten Rosenberg
-
Christos Chatzaras
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Dave Richards
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deano-dovecot＠areyes.com
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Julian Kippels
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Sami Ketola