Closed Feature: Allow downloading messages by supplying their UIds [1838]

Problem with LocaWeb ISP

* First Connect OK
* Folders List and Search Ok
* Folders Select OK
* Select ALL messages header OK
but ... get message body content error

IMAPX2 LOGIN "suport@xxxxxxxxxxxx.com" "xxxxxxxxxxxxx"

* CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS SPECIAL-USE QUOTA
IMAPX2 OK Logged in
A first chance exception of type 'System.Net.Sockets.SocketException' occurred in ImapX.dll
IMAPX2 LOGIN "suport@xxxxxxxxxxxx.com" "xxxxxxxxxxxxx"

* CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS SPECIAL-USE QUOTA
IMAPX2 OK Logged in
A first chance exception of type 'System.Net.Sockets.SocketException' occurred in ImapX.dll