Work, thank you!

New packages are out.

Missed the ticket reference on this commit:

https://github.com/horde/horde/commit/f7641fe6054d9d0378806f0d139cbe16e678ae2f

Fixed for next release of Horde_Core and Horde_ActiveSync. Will 
release on Monday since I'm working another unrelated issue I hope to 
include in the release.

Changes have been made in Git (master):

commit 73d396d723ece691e3b034edd8f01b1247a27a64
Author: Michael J Rubinsky <mrubinsk@horde.org>
Date:   Mon Jun 1 00:22:43 2015 -0400

     If we fail do to a missing capability, retry after rebuilding the part.

     Some clients send user uneditable text (such as auto-generated html
     signatures) that exceed the maximum line length, thus require
     BINARYMIME to be supported in the sending server. Check that any
     failures are not due to this by trying again after rebuilding
     the MIME part sent from the client.

     Fix for Bug: 13901

  framework/Core/lib/Horde/Core/ActiveSync/Mail.php |   33 
+++++++++++++++++++++
  1 files changed, 33 insertions(+), 0 deletions(-)

http://github.com/horde/horde/commit/73d396d723ece691e3b034edd8f01b1247a27a64

Ok wait for your feedback.

I'll see what I can do next week. Should be able to rewrite the MIME 
part to wrap the text/html data, as long as the message isn't signed 
or encrypted.

No way, I try it with linebreaks but all the text is again in one line 
in the debug log.
Text format is plain, but device send anyway in HTML :-(

I guess it is time for a new device, because it make no sense for me 
to fix this on the horde side.

This was helpful.

The client is sending the HTML data as one long line without any line 
breaks (CR/LF). 8Bit data MUST be less than 998 characters per line. 
Anything longer MUST be treated as binary. (RFC 2045 [2.8]).

This MIGHT be the way you entered your HTML signature yourself, or 
maybe it's the client's fault. If you are able to manually enter the 
HTML for the HTML signature, be sure to add some linebreaks in it.

Either way,  we should be able to capture the error and retry once 
after searching for and truncating any lines in text/html parts. Would 
rather not mangle the pure message from the client unless absolutely 
necessary though.

Found one mail on the device :)
Send you by mail the log file.

Is the <br> after </html> the problem?
[...] <!--a75c305b1c0a6022--></body></html><br>

Ok I try this, unfortunately I have to wait for the next time this 
error happens.

If you enable "detailed" logging for ActiveSync, it *should* log the 
full message source in the log. If you can get that and send it to me, 
I can try to see if there is any workaround.

FWIW, my email server is also missing that extension, so I should be 
able to duplicate the error if I have a sample message.

You are missing BINARYMIME (RFC 3030) which is different than 8BITMIME 
(RFC 6152). Not 100% sure what part of the message requires it, since 
I don't have the raw message, but that is what the error code is 
telling you.

root@mailserver:/# telnet 127.0.0.1 25
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
220 mailserver.intern ESMTP Postfix (Debian/GNU)
EHLO mailserver.intern
250-mailserver.intern
250-PIPELINING
250-SIZE 157286400
250-VRFY
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
QUIT
221 2.0.0 Bye

Happens again on a HTC One mini2 with Android 4.4.2

[...]
2015-05-26T10:50:42+02:00 DEBUG: [14623] I   </ComposeMail:ClientId>
2015-05-26T10:50:42+02:00 DEBUG: [14623] I   <ComposeMail:MIME>
2015-05-26T10:50:42+02:00 DEBUG: [14623] I     [2801 bytes of content]
2015-05-26T10:50:42+02:00 DEBUG: [14623] I   </ComposeMail:MIME>
2015-05-26T10:50:42+02:00 DEBUG: [14623] I  </ComposeMail:SendMail>
2015-05-26T10:50:42+02:00 INFO: [14250] Maximum memory usage for 
ActiveSync request: 23855104 bytes.
2015-05-26T10:50:42+02:00 ERR: Server does not support binary message data.
2015-05-26T08:50:42+00:00 INFO: [14248] 
Horde_Core_ActiveSync_Driver::authenticate() attempt for samuel
2015-05-26T08:50:42+00:00 INFO: [14385] 
Horde_Core_ActiveSync_Driver::authenticate() attempt for samuel
2015-05-26T10:50:42+02:00 INFO: [14248] PING request received for user samuel
2015-05-26T10:50:42+02:00 INFO: [14248] Device entry exists for 
HTCXXXXXX, updating userAgent and version.
[...]

I found no way to copy the message from the device (move to an other 
folder doesn't work).

@ Mike, I send you a screenshot from the message (sorry, I think this 
does not help, or?).
Interesting was, as soon I remove the signature the mail was send 
successfully.

Closing for now until more data is available.

No, the mail address was a normal not EAI address like my with another name.
Unfortunately the smartphone never save the mail on the server.
Looking, but do not found anything expected normal text in this mail.

I guess it make no sense to search the problem with this information, 
please close this ticket.
If I have the problem again I will provide more informations on this ticket.

This message is thrown when the SMTP server doesn't support 8bitmime 
or binarymime extensions when they are required. The question is what 
about that email requires those extensions? Without seeing the email 
data it's hard to say. Are you sending to an EAI  (Email Address 
Internationalization) address? It would be helpful to see the raw 
email data of such an email.

Sometimes my device (Android 4.4.2 HTC One mini2) is not able to send 
a text mail over ActiveSync, debug log attached.

I have no idea what's wrong with this mail, was a new mail over the 
smartphone without a attachment.

Found this in the logfile:
ERR: Server does not support binary message data.