[Dovecot] Courier->dovecot migration script

[John Lightsey]

W is the size of the file with CR/LF for newlines.  It's the same size  
courier stores in the POP3 uildlist file.

I wrote an updated version of the courier-dovecot migration script  
that attempts to convert in both directions (using the V3 dovecot- 
uidlist format) a while back.

It's freely licensed if you want to give it a try.

http://httpupdate.cpanel.net/cpanelsync/EDGE/bin/maildir-migrate


On Nov 12, 2008, at 11:59 PM, Paul Gamble - MWEB wrote:

> Hi Timo
>
> I aplogise if this is documented somewhere (couldn't find it), but  
> could
> you tell me what the "W<int>" field represents in a v3 dovecot-uidlist
> file? That is, when Dovecot v1.1.2 converts a v1 dovecot-uidlist  
> file, I
> see the following (taking the first few lines):
>
> V1 (generated by the courier-dovecot-migrate.pl script):
> 1 1208331473 30
> 2 1208332540.H167727P3133.mesg-dev2.mweb.co.za,S=343
> 3 1208332756.H543324P3161.mesg-dev2.mweb.co.za,S=340
> 4 1208332857.H236884P3191.mesg-dev2.mweb.co.za,S=339
> 5 1224664518.H150402P10074.mesg-dev2.mweb.co.za,S=342
> 6 1224664556.H128444P10080.mesg-dev2.mweb.co.za,S=339
> 7 1224666352.H992318P10361.mesg-dev2.mweb.co.za,S=339
>
> V3 conversion:
> 3 V1208331473 N31
> 2 W353 :1208332540.H167727P3133.mesg-dev2.mweb.co.za,S=343:2,S
> 3 W350 :1208332756.H543324P3161.mesg-dev2.mweb.co.za,S=340:2,
> 4 W349 :1208332857.H236884P3191.mesg-dev2.mweb.co.za,S=339:2,S
> 5 W352 :1224664518.H150402P10074.mesg-dev2.mweb.co.za,S=342:2,S
> 6 W349 :1224664556.H128444P10080.mesg-dev2.mweb.co.za,S=339:2,S
> 7 W349 :1224666352.H992318P10361.mesg-dev2.mweb.co.za,S=339:2,
>
> I notice that the W<int>'s are not unique (e.g. W349).
>
> Thanking-you...
>
> -----Original Message-----
> From: dovecot-bounces+pgamble=mweb.com at dovecot.org
> [mailto:dovecot-bounces+pgamble=mweb.com at dovecot.org] On Behalf Of  
> Timo
> Sirainen
> Sent: 12 November 2008 02:43 PM
> To: Warren Baker
> Cc: dovecot at dovecot.org
> Subject: Re: [Dovecot] Courier->dovecot migration script
>
> On Wed, 2008-11-12 at 13:12 +0200, Warren Baker wrote:
>> HI All,
>>
>> We have the latest Dovecot 1.1.6 running and I need to migrate some
>> POP3 users over from Courier to Dovecot and would need to convert the
>> courierpop3dsizelist to maintain the UIDs.
>> I just need to confirm that the script
>> (http://www.dovecot.org/tools/courier-dovecot-migrate.pl) only works
>> for Dovecot v1.0 and not for v1.1?
>> As the dovecout-uidlist file that is created (by the script) is not  
>> in
>
>> the same format as dovecot-uidlist file that is created by the 1.1.6
>> server.
>
> Dovecot v1.1 can read v1.0 uidlists just fine, so the script still
> works. But it's possible that the script doesn't convert all POP3  
> UIDLs
> because it wasn't possible with v1.0 (it'll report how many it  
> couldn't
> convert). Dovecot v1.1 supports storing any kind of POP3 UIDLs in the
> uidlist file, which would make it possible to create a migration  
> script
> that preserved all the UIDLs correctly. If you or anyone else wants to
> try, the v1.1 format uidlist with POP3 UIDLs would look like:
>
> 3 V<uid-validity> N<next-uid>
> <uid> P<pop3 uidl> :<filename>
>
> Where the first line is a header. So for example with 3 different  
> kinds
> of Courier UIDLs:
>
> 3 V1196932607 N125574
> 1234 P1234 :1225386267.M230815P21206.host
> 1235 P1196932607-1235 :1225386268.M230815P21206.host
> 1236 P1225386269.M230815P21206.host :1225386269.M230815P21206.host
>
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