#626 imap search for from: or to: returns nothing

[Peter Chubb]

The search parameter is, e.g.,
elmo-imap416 uid search CHARSET us-ascii to lilypond-dev
There are messages with To: or CC: lilypond-dev@gnu.org in my mailbox.
The reply is
elmo-imap416 OK SEARCH completed

The same happens with From: searches:
The backend is Exchange 2013 OWA version 15.0.1178.4

[Peter Chubb]

Sorry, missed a line of reply:
` * SEARCH

[Peter Chubb]

The relevant part of a Wire log for a search To Peter is:

  <m:Restriction>
         <t:Contains ContainmentMode="Substring"  
                ContainmentComparison="IgnoreCase">  
        <t:ExtendedFieldURI DistinguishedPropertySetId="InternetHeaders"
              PropertyName="to" PropertyType="String"/>
    <t:Constant Value="peter"/>
    </t:Contains>
</m:Restriction>

[Mickael Guessant]

I managed to reproduce this issue: the issue is that to and cc fields are not searchable over EWS.
=> Implemented a partial workaround: search displayto / displaycc instead
Workaround available in subversion

[Peter Chubb]

Thanks -- To: and CC: now work, but From: still does not.

I think the 'real' fix will be to move to AQS, but that's a fairly major change.

[Peter Chubb]

In the meanwhile, here's a small patch that uses a similar workaorund to the DsplayFrom hack. It seems only to search on email address, not the display name fields

[Mickael Guessant]

Patch merged. Looks like that's best we can do.
Even with AQS it looks like this is an Exchange limitation