I have migrated a couple domains so far from my QMail server to my Zimbra cluster. On this domain, I have moved a lot of messages without issue. Actually, on this particular account, I've moved about 135k messages successfully. However, a few hours into the transfer, I start getting the following errors:

Code:
        Mail::IMAPClient::_send_line('Mail::IMAPClient=HASH(0x8cb3ea0)', '43733                                                                                                                                CREATE sent-mail-oct-2005', 0) called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMA                                                                                                                               PClient.pm line 1177
        Mail::IMAPClient::_imap_command_do('Mail::IMAPClient=HASH(0x8cb3ea0)', '                                                                                                                               CREATE sent-mail-oct-2005') called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPCl                                                                                                                               ient.pm line 1086
        Mail::IMAPClient::_imap_command('Mail::IMAPClient=HASH(0x8cb3ea0)', 'CRE                                                                                                                               ATE sent-mail-oct-2005') called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPClien                                                                                                                               t.pm line 2116
        Mail::IMAPClient::_imap_folder_command('Mail::IMAPClient=HASH(0x8cb3ea0)                                                                                                                               ', 'CREATE', 'sent-mail-oct-2005') called at /usr/lib/perl5/site_perl/5.8.8/Mail                                                                                                                               /IMAPClient.pm line 2124
        Mail::IMAPClient::create('Mail::IMAPClient=HASH(0x8cb3ea0)', 'sent-mail-                                                                                                                               oct-2005') called at /usr/bin/imapsync line 1904
        main::create_folder('Mail::IMAPClient=HASH(0x8cb3ea0)', 'sent-mail-oct-2                                                                                                                               005', 'INBOX.sent-mail-oct-2005') called at /usr/bin/imapsync line 1076
Couldn't create folder [sent-mail-oct-2005] from [INBOX.sent-mail-oct-2005]: Err                                                                                                                               or sending '43733 CREATE sent-mail-oct-2005': NO not connected
Trying command when NOT connected! at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPCl                                                                                                                               ient.pm line 117
        Mail::IMAPClient::LastError('Mail::IMAPClient=HASH(0x8cb3ea0)', 'NO not                                                                                                                                connected') called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPClient.pm line 132                                                                                                                               7
        Mail::IMAPClient::_send_line('Mail::IMAPClient=HASH(0x8cb3ea0)', '43734                                                                                                                                STATUS sent-mail-oct-2005 (MESSAGES)', 0) called at /usr/lib/perl5/site_perl/5.8                                                                                                                               .8/Mail/IMAPClient.pm line 1177
        Mail::IMAPClient::_imap_command_do('Mail::IMAPClient=HASH(0x8cb3ea0)', '                                                                                                                               STATUS sent-mail-oct-2005 (MESSAGES)') called at /usr/lib/perl5/site_perl/5.8.8/                                                                                                                               Mail/IMAPClient.pm line 1086
        Mail::IMAPClient::_imap_command('Mail::IMAPClient=HASH(0x8cb3ea0)', 'STA                                                                                                                               TUS sent-mail-oct-2005 (MESSAGES)') called at /usr/lib/perl5/site_perl/5.8.8/Mai                                                                                                                               l/IMAPClient.pm line 2214
        Mail::IMAPClient::status('Mail::IMAPClient=HASH(0x8cb3ea0)', 'sent-mail-                                                                                                                               oct-2005') called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPClient.pm line 1816
        Mail::IMAPClient::exists('Mail::IMAPClient=HASH(0x8cb3ea0)', 'sent-mail-                                                                                                                               oct-2005') called at /usr/bin/imapsync line 1909
        main::create_folder('Mail::IMAPClient=HASH(0x8cb3ea0)', 'sent-mail-oct-2                                                                                                                               005', 'INBOX.sent-mail-oct-2005') called at /usr/bin/imapsync line 1076
[INBOX.sent-mail-sep-2005]          -> [sent-mail-sep-2005]
Creating folder [sent-mail-sep-2005] on host2
Trying command when NOT connected! at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPCl                                                                                                                               ient.pm line 117
        Mail::IMAPClient::LastError('Mail::IMAPClient=HASH(0x8cb3ea0)', 'NO not                                                                                                                                connected') called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPClient.pm line 132                                                                                                                               7
        Mail::IMAPClient::_send_line('Mail::IMAPClient=HASH(0x8cb3ea0)', '43735                                                                                                                                CREATE sent-mail-sep-2005', 0) called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMA                                                                                                                               PClient.pm line 1177
        Mail::IMAPClient::_imap_command_do('Mail::IMAPClient=HASH(0x8cb3ea0)', '                                                                                                                               CREATE sent-mail-sep-2005') called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPCl                                                                                                                               ient.pm line 1086
        Mail::IMAPClient::_imap_command('Mail::IMAPClient=HASH(0x8cb3ea0)', 'CRE                                                                                                                               ATE sent-mail-sep-2005') called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPClien                                                                                                                               t.pm line 2116
        Mail::IMAPClient::_imap_folder_command('Mail::IMAPClient=HASH(0x8cb3ea0)                                                                                                                               ', 'CREATE', 'sent-mail-sep-2005') called at /usr/lib/perl5/site_perl/5.8.8/Mail                                                                                                                               /IMAPClient.pm line 2124
        Mail::IMAPClient::create('Mail::IMAPClient=HASH(0x8cb3ea0)', 'sent-mail-                                                                                                                               sep-2005') called at /usr/bin/imapsync line 1904
        main::create_folder('Mail::IMAPClient=HASH(0x8cb3ea0)', 'sent-mail-sep-2                                                                                                                               005', 'INBOX.sent-mail-sep-2005') called at /usr/bin/imapsync line 1076
Couldn't create folder [sent-mail-sep-2005] from [INBOX.sent-mail-sep-2005]: Err                                                                                                                               or sending '43735 CREATE sent-mail-sep-2005': NO not connected
Trying command when NOT connected! at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPCl                                                                                                                               ient.pm line 117
        Mail::IMAPClient::LastError('Mail::IMAPClient=HASH(0x8cb3ea0)', 'NO not                                                                                                                                connected') called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPClient.pm line 132                                                                                                                               7
        Mail::IMAPClient::_send_line('Mail::IMAPClient=HASH(0x8cb3ea0)', '43736                                                                                                                                STATUS sent-mail-sep-2005 (MESSAGES)', 0) called at /usr/lib/perl5/site_perl/5.8                                                                                                                               .8/Mail/IMAPClient.pm line 1177
        Mail::IMAPClient::_imap_command_do('Mail::IMAPClient=HASH(0x8cb3ea0)', '                                                                                                                               STATUS sent-mail-sep-2005 (MESSAGES)') called at /usr/lib/perl5/site_perl/5.8.8/                                                                                                                               Mail/IMAPClient.pm line 1086
        Mail::IMAPClient::_imap_command('Mail::IMAPClient=HASH(0x8cb3ea0)', 'STA                                                                                                                               TUS sent-mail-sep-2005 (MESSAGES)') called at /usr/lib/perl5/site_perl/5.8.8/Mai                                                                                                                               l/IMAPClient.pm line 2214
        Mail::IMAPClient::status('Mail::IMAPClient=HASH(0x8cb3ea0)', 'sent-mail-                                                                                                                               sep-2005') called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPClient.pm line 1816
        Mail::IMAPClient::exists('Mail::IMAPClient=HASH(0x8cb3ea0)', 'sent-mail-                                                                                                                               sep-2005') called at /usr/bin/imapsync line 1909
        main::create_folder('Mail::IMAPClient=HASH(0x8cb3ea0)', 'sent-mail-sep-2                                                                                                                               005', 'INBOX.sent-mail-sep-2005') called at /usr/bin/imapsync line 1076
++++ End looping on each folder
Trying command when NOT connected! at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPCl                                                                                                                               ient.pm line 117
        Mail::IMAPClient::LastError('Mail::IMAPClient=HASH(0x8cb3ea0)', 'NO not                                                                                                                                connected') called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPClient.pm line 132                                                                                                                               7
        Mail::IMAPClient::_send_line('Mail::IMAPClient=HASH(0x8cb3ea0)', '43737                                                                                                                                LOGOUT', 0) called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPClient.pm line 117                                                                                                                               7
        Mail::IMAPClient::_imap_command_do('Mail::IMAPClient=HASH(0x8cb3ea0)', '                                                                                                                               LOGOUT', 'BYE') called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPClient.pm line                                                                                                                                1086
        Mail::IMAPClient::_imap_command('Mail::IMAPClient=HASH(0x8cb3ea0)', 'LOG                                                                                                                               OUT', 'BYE') called at /usr/lib/perl5/site_perl/5.8.8/Mail/IMAPClient.pm line 17                                                                                                                               50
        Mail::IMAPClient::logout('Mail::IMAPClient=HASH(0x8cb3ea0)') called at /                                                                                                                               usr/bin/imapsync line 1427
I ran the following command:
Code:
[root@IMAPsync ~]# /usr/bin/imapsync --buffersize 8192000 --nosyncacls --subscribe --syncinternaldates --host1 208.100.1.33 --user1 migrate1@ics-il.net --password1 **** --host2 10.1.8.9 --user2 mhammett@ics-il.net --password2 **** --noauthmd5 --tls2
Ideas?