[sync] Error while Syncing Emails via ActiveSync

[Silvester Plank]

Hello,

i installed a clean Horde 5 beta last week. Everything worked as i  
expected except syncing Mails via ActiveSync. I Updated to RC1 hoping that  
it works now, but the error is still the same.
I can Sync Calendars, Tasks and Contacts, so ActiveSync itself works.
The ActiveSync log just shows me:


2012-10-26T23:45:40+00:00 DEBUG: Updating state during change
2012-10-26T23:45:40+00:00 DEBUG: Horde::getMessage(INBOX, 5160)
2012-10-26T23:45:40+00:00 ERR: Der E-Mail-Server hat die Verbindung  
unerwartet unterbrochen.
2012-10-26T23:45:40+00:00 ERR: Unknown backend error skipping message: Der  
E-Mail-Server hat die Verbindung unerwartet unterbrochen.


for every message i try to recive.
Next i tried to activate the IMP log in my IMAP Configuration:


S: * OK [CAPABILITY IMAP4rev1 LITERAL+ ID ENABLE AUTH=PLAIN AUTH=LOGIN  
SASL-IR] *mailserver* Cyrus IMAP v2.4.16 server ready
C: [LOGIN Command - username: *user*]
S: 118 OK [CAPABILITY IMAP4rev1 LITERAL+ ID ENABLE ACL RIGHTS=kxte QUOTA  
MAILBOX-REFERRALS NAMESPACE UIDPLUS NO_ATOMIC_RENAME UNSELECT CHILDREN  
MULTIAPPEND BINARY CATENATE CONDSTORE ESEARCH SORT SORT=MODSEQ  
SORT=DISPLAY THREAD=ORDEREDSUBJECT THREAD=REFERENCES ANNOTATEMORE  
LIST-EXTENDED WITHIN QRESYNC SCAN XLIST URLAUTH URLAUTH=BINARY  
LOGINDISABLED AUTH=PLAIN AUTH=LOGIN COMPRESS=DEFLATE IDLE] User logged in  
SESSIONID=<*mailserver*-27835-1351169094-1>
C: 119 EXAMINE "INBOX"
S: * 4575 EXISTS
S: * 0 RECENT
S: * FLAGS (\Answered \Flagged \Draft \Deleted \Seen XOPL-1 $NotJunk $Junk  
JunkRecorded $Forwarded NotJunk)
S: * OK [PERMANENTFLAGS ()] Ok
S: * OK [UIDVALIDITY 1203324865] Ok
S: * OK [UIDNEXT 5174] Ok
S: * OK [HIGHESTMODSEQ 842] Ok
S: * OK [URLMECH INTERNAL] Ok
S: 119 OK [READ-ONLY] Completed
C: 120 UID FETCH 5160 (BODYSTRUCTURE FLAGS)
S: * 4562 FETCH (FLAGS (\Seen $NotJunk NotJunk) UID 5160 BODYSTRUCTURE  
("TEXT" "PLAIN" ("CHARSET" "utf-8" "FORMAT" "flowed" "DELSP" "Yes") NIL  
NIL "BASE64" 756 10 NIL ("INLINE" NIL) NIL NIL))
S: 120 OK Completed (0.000 sec)
C: 121 UID FETCH 5160 (ENVELOPE)
S: * 4562 FETCH (UID 5160 ENVELOPE ("Wed, 24 Oct 2012 13:04:39
*envelope*
S: 121 OK Completed (0.000 sec)
C: 122 UID FETCH 5160 (BINARY.PEEK[1]<0.500> BINARY.SIZE[1])
S: >> ERROR: IMAP read/timeout error.
C: 123 LOGOUT
>> ERROR: Server closed the connection.


Though accessing mails with the IMP Backend itself works, so i Accesed the  
the Email above to find out what is different:


>> Timestamp: Fri, 26 Oct 2012 08:19:35 +0000
S: * OK [CAPABILITY IMAP4rev1 LITERAL+ ID ENABLE AUTH=PLAIN AUTH=LOGIN  
SASL-IR] *mailserver* Cyrus IMAP v2.4.16 server ready
C: [LOGIN Command - username: *user*]
S: 1 OK [CAPABILITY IMAP4rev1 LITERAL+ ID ENABLE ACL RIGHTS=kxte QUOTA  
MAILBOX-REFERRALS NAMESPACE UIDPLUS NO_ATOMIC_RENAME UNSELECT CHILDREN  
MULTIAPPEND BINARY CATENATE CONDSTORE ESEARCH SORT SORT=MODSEQ  
SORT=DISPLAY THREAD=ORDEREDSUBJECT THREAD=REFERENCES ANNOTATEMORE  
LIST-EXTENDED WITHIN QRESYNC SCAN XLIST URLAUTH URLAUTH=BINARY  
LOGINDISABLED AUTH=PLAIN AUTH=LOGIN COMPRESS=DEFLATE IDLE] User logged in  
SESSIONID=<*mailserver*-6720-1351239575-1>
C: 2 SELECT "INBOX"
S: * 4579 EXISTS
S: * 0 RECENT
S: * FLAGS (\Answered \Flagged \Draft \Deleted \Seen XOPL-1 $NotJunk $Junk  
JunkRecorded $Forwarded NotJunk)
S: * OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen XOPL-1  
$NotJunk $Junk JunkRecorded $Forwarded NotJunk \*)] Ok
S: * OK [UIDVALIDITY 1203324865] Ok
S: * OK [UIDNEXT 5178] Ok
S: * OK [HIGHESTMODSEQ 862] Ok
S: * OK [URLMECH INTERNAL] Ok
S: 2 OK [READ-WRITE] Completed
C: 3 UID FETCH 5160 (BODYSTRUCTURE)
S: * 4562 FETCH (UID 5160 BODYSTRUCTURE ("TEXT" "PLAIN" ("CHARSET" "utf-8"  
"FORMAT" "flowed" "DELSP" "Yes") NIL NIL "BASE64" 756 10 NIL ("INLINE"  
NIL) NIL NIL))
S: 3 OK Completed (0.010 sec)
C: 4 UID FETCH 5160 (ENVELOPE)
S: * 4562 FETCH (UID 5160 ENVELOPE ("Wed, 24 Oct 2012 13:04:39
*envelope*
S: 4 OK Completed (0.000 sec)
C: 5 UID FETCH 5160 (BODY[HEADER])
S: * 4562 FETCH (UID 5160 BODY[HEADER] {3713}
S:
*header*
S: )
S: 5 OK Completed (0.000 sec)
C: 6 UID FETCH 5160 (BINARY.PEEK[1])
S: * 4562 FETCH (UID 5160 BINARY[1] {550}
S:
*body*
S: 6 OK Completed (0.000 sec)
C: 7 SEARCH RETURN (COUNT) UNSEEN
S: * ESEARCH (TAG "7") COUNT 0
S: 7 OK Completed (0 msgs in 0.010 secs)
C: 8 LOGOUT
S: * BYE LOGOUT received
S: 8 OK Completed


Now i can Tell, that the ActiveSync Session is trying to skip the Mail  
Headers and directly accessing the Body. But i also have no idea what i  
could do next to fix that. I Tried to access a different IMAP Account, so  
there is nothing wrong with my IMAP Account. The logs above come from a  
sync with a iOS6 device, though i also tested it with a HTC One S (i  
forgot to look up the installed Android version) and the errors are the  
same.