Is the parameter mentioned by Mr. Nashed (BrowserRenderDisable=1) in the Notes.INI of the affected users, or is the problem being seen even without this parameter in the Notes.INI?

Thanks, I'm already in contact with Daniel Nashed, and I'd tried the " BrowserRenderDisable=1" before posting here.  Makes no difference.  It think it is because he is looking at an issue involving MIME emails (rendered with or without embedded IE) and the emails I'm dealing with are Rich Text and don't involve being rendered or not rendered via browser functionality.

The issue is similar but not identical to what he describes.  All fonts get replaced with "default monospace", not just san serif fonts. And again, the recipient sees the email fine with the original fonts, only reopening the sent email in our custom Domino application using the Notes client shows that all fonts have changed to "default monospace".  Once changed, anybody opening the sent email with any client version will see "default monospace" fonts in the body.  It isn't a rendering issue; the fonts are actually changed in the body during the send process when using an FP9 client.

I reverted one client to FP8 last night, and the problem disappeared and reverted to normal behavior.

Have been going back and forth with Daniel Nashed about this problem.  In addition, I found the bug/behavior in FP9 is affected by the Location settings in the client.  In particular, the "Format for messages addressed to internet addresses" setting, if set to "MIME Format" (as is preferred), triggers the bug described (i.e. with some mail forms, after sending, the local doc has the fonts in Rich Text fields changed to, in our case, all Default Monospace.  The recipient of the email is unaffected and sees the original fonts correctly.).

If the "Format messages addressed to internet addresses" setting in the Locations/Mail is set to "Notes Rich Text Format", the bug disappears and behavior in the local client is the same as before FP9.  However, the sent doc is not identical on the recipients end, depending on your server settings.

-- Mark

In addition to the server settings, does the Format preference for incoming mail in the Person Record factor into this?