[Dovecot] sync re-copies emails assigning new UIDs

[Anand Kumria]

I've now upgraded my server to Dovecot v2.2.5 - and the same problem still
occurs.

Has anyone else had Dovecot consistently fail to sync remote users?

I've been trying this essentially daily for the last month to finish this
migration off, with no success. :-(

A


On 3 August 2013 11:28, Anand Kumria <wildfire at progsoc.org> wrote:

> Hi,
>
> I have been (attempting) to transition a company from in-house dovecot 1.x
> to a hosted dovecot 2.2 setup.
>
> I am running the doveadm sync command, and for the four mailboxes have
> been blocked -- sync'ing seem to be copying the same mails, over and over
> (note, initially I was using doveadm backup but my reading has indicated
> that 'doveadm sync' is better)
>
> Example:
>
> # date && doveadm -v -o imapc_user=kaye at example.com -o
> imapc_password=*pass* -o imapc_host=imap.example.com -o imapc_port=993 -o
> imapc_ssl=imaps -o imap
> c_ssl_dir=/etc/ssl -o imapc_feature=rfc822.size -o imapc_ssl_verify=no
> sync -1 -R -u kaye at example.com imapc:
> Sat Aug  3 09:05:37 UTC 2013
> [...]
> dsync(kaye at example.com): Info: copy from INBOX: box=INBOX, uid=5306,
> msgid=<FB3A2E1C62B148F8B057476BDCBB4A9B at THENORMANS>, size=13544
> dsync(kaye at example.com): Info: copy from INBOX: box=INBOX, uid=5307,
> msgid=<006b01ce8dad$b8864930$2992db90$@com.au>, size=10163563
> [...]
> dsync(kaye at example.com): Info: copy from INBOX: box=INBOX, uid=5311,
> msgid=<cm.083930.bijjdjk.jdkimlhij.r at createsend5.com>, size=46658
> [...]
>
>
> # date && doveadm -v -o imapc_user=kaye at example.com -o
> imapc_password=*pass* -o imapc_host=imap.example.com -o imapc_port=993 -o
> imapc_ssl=imaps -o imapc_ssl_dir=/etc/ssl -o imapc_feature=rfc822.size -o
> imapc_ssl_verify=no sync -1 -R -u kaye at example.com imapc:
> Sat Aug  3 10:01:48 UTC 2013
> [...]
> dsync(kaye at kamdha.com): Info: copy from INBOX: box=INBOX, uid=5324,
> msgid=<FB3A2E1C62B148F8B057476BDCBB4A9B at THENORMANS>, size=13544
> dsync(kaye at kamdha.com): Info: copy from INBOX: box=INBOX, uid=5325,
> msgid=<006b01ce8dad$b8864930$2992db90$@com.au>, size=10163563
> [...]
> dsync(kaye at kamdha.com): Info: copy from INBOX: box=INBOX, uid=5329,
> msgid=<cm.083930.bijjdjk.jdkimlhij.r at createsend5.com>, size=46658
> [...]
>
> The exact same number of emails (some in the INBOX, some in the Sent
> folder) are transferred each time.
>
> In this case, I've firewalled the origin - so their entire mail system is
> stopped whilst I do the transfer just in case modifications of IMAP flags
> or additional delivieres might have been the problem.
>
> I am using Dovecot v2.2.4; is this normal expected behaviour? If so, what
> is the best way to ensure that a migration is done without data loss.
>
> If this isn't expected, has anyone else seen this kind of error before?
>
> Thanks,
> Anand
>