In absence of advice here, I replicated the accounts manually and am attempting an imapsync to the new server. Imapsync... just ... sits ... there.
Granted the big mailbox is 6 GB... but ... wow.
Help? Please?
/usr/bin/imapsync --buffersize 8192000 --nosyncacls --subscribe --syncinternaldates --host1 10.10.1.5 --user1
emailbox@mydomain.org --password1 supersecret --host2 127.0.0.1 --user2
emailbox@mydomain.org --password2 supersecret --port1 143 --port2 143 --authmech1 PLAIN --authmech2 PLAIN --split1 1000 --split2 1000
will try to use PLAIN authentication on host1
will try to use PLAIN authentication on host2
From imap server [10.10.1.5] port [143] user [emailbox@mydomain.org]
To imap server [127.0.0.1] port [143] user [emailbox@mydomain.org]
Banner : * OK mail.mydomain.org Zimbra IMAP4rev1 service ready
Host 10.10.1.5 says it has CAPABILITY for AUTHENTICATE PLAIN
Success login on [10.10.1.5] with user [emailbox@mydomain.org] auth [PLAIN]
Banner : * OK mail1.mydomain.org Zimbra IMAP4rev1 service ready
Host 127.0.0.1 says it has CAPABILITY for AUTHENTICATE PLAIN
Success login on [127.0.0.1] with user [emailbox@mydomain.org] auth [PLAIN]
From capability : ID WITHIN QUOTA ESEARCH NAMESPACE STARTTLS MULTIAPPEND SASL-IR IDLE LOGIN-REFERRALS CONDSTORE UNSELECT QRESYNC ENABLE BINARY UIDPLUS CATENATE IMAP4REV1 AUTH=X-ZIMBRA LIST-EXTENDED RIGHTS=EKTX AUTH=PLAIN ACL LITERAL+ SEARCHRES CHILDREN
To capability : ID WITHIN QUOTA ESEARCH NAMESPACE STARTTLS MULTIAPPEND SASL-IR IDLE LOGIN-REFERRALS CONDSTORE UNSELECT QRESYNC ENABLE BINARY UIDPLUS CATENATE IMAP4REV1 AUTH=X-ZIMBRA LIST-EXTENDED RIGHTS=EKTX AUTH=PLAIN ACL LITERAL+ SEARCHRES CHILDREN
From state Authenticated
To state Authenticated
From separator and prefix : [/][]
To separator and prefix : [/][]
++++ Calculating sizes ++++
From Folder [Some Folder] Size: 18486948 Messages: 4528
From Folder [Chats] Size: 0 Messages: 0
From Folder [Contacts] Size: 0 Messages: 0
From Folder [Even More Emails] Size: 0 Messages: 0
From Folder [Drafts] Size: 21124 Messages: 7
From Folder [Emailed Contacts] Size: 30065 Messages: 88
From Folder [Cookies Taste Good] Size: 0 Messages: 0
From Folder [INBOX]
And it sits.