Sender name behaivour

[stuartg.orion]

One of my users pointed out inconsistent behaviour with regards to the from name sent by Zimbra. In certain circumstances the web client only seems to send the email address and not the display name. I haven't been able to determine what the trigger is but it looking though the sender names in my inbox I can tell if it has happened because the name is either Capitalised (the Sender name was sent) or not (only the email address was sent). I've only noticed this since the upgrade to 5.0.16

Eg
Some headers look like:

Date: Mon, 11 May 2009 11:21:09 +1200 (NZST)
From: blah@orionhealth.com
Sender: blah@orionhealth.com
<snip>
X-Mailer: Zimbra 5.0.16_GA_2921.RHEL4_64 (ZimbraWebClient - FF3.0 (Win)/5.0.16_GA_2921.RHEL4_64)


ANd others look like:
From: Blah Blah <blah@orionhealth.com>
<snip>
X-Mailer: Zimbra 5.0.16_GA_2921.RHEL4_64 (ZimbraWebClient - FF3.0 (Win)/5.0.16_GA_2921.RHEL4_64)


Is it a coincidence that this happens when there is a Sender header?

Has anyone else seen this?

[stuartg.orion]

Ok I've since found headers that look like:

From: Blah Blah2 <blah2@orionhealth.com>
Sender: blah2@orionhealth.com
<snip>
X-Mailer: Zimbra 5.0.16_GA_2921.RHEL4_64 (ZimbraWebClient - SAF3 (Mac)/5.0.16_GA_2921.RHEL4_64)


So the Sender thing was probably a red herring