[Dovecot] pop3 migration

[Timo Sirainen]

On 23.8.2012, at 16.40, TeTeHacko wrote:

> I have problems with pop3 migration, the server disconect the dovesync when
> fetching mails after 5 minutes with this error in server log:
> 
> xx.xx.xx.xx   [28F4] 11:54:05 <<< RETR 6548
> xx.xx.xx.xx   [28F4] 11:54:05 >>> +OK 47522 octets
> xx.xx.xx.xx   [28F4] 11:54:05 <<< RETR 6549
> xx.xx.xx.xx   [28F4] 11:54:05 >>> +OK 355289 octets
> xx.xx.xx.xx   [28F4] 11:54:05 <<< RETR 6550
> xx.xx.xx.xx   [28F4] 11:54:05 >>> +OK 9638 octets
> xx.xx.xx.xx   [28F4] 11:54:05 <<< RETR 6551
> xx.xx.xx.xx   [28F4] 11:54:05 >>> +OK 2188 octets
> xx.xx.xx.xx   [28F4] 11:59:05 >>> -ERR Command unrecognized: ""
> xx.xx.xx.xx   [28F4] 11:59:05 *** <info at istan.cz> 6551 477693894 00:12:55 ERROR
> xx.xx.xx.xx   [28F4] 11:59:05 Disconnected

Looks like a bug. But in Dovecot POP3 client or the POP3 server? Apparently either Dovecot sends an empty line after RETR or the server thinks Dovecot sends it. Can you get the actual TCP traffic logs? and/or set pop3c_rawlog_dir and see if it's there.