Got the problem isolated down to one particular gem (Yes, I had to do a split-half search turning them off & on to figure this out).
The conflict is with a gem called writeexcel. I have no idea what this is a conflict -- this gem has nothing to do with sending out mail and it is used in an unrelated part of my app, but as you an see, when this gem is activated I get this in the outgoing email header: <Content-Type: multipart/alternative; boundary=utf8'en'-- ==_mimepart_4dc305ed68008_8473800d21b024556; charset=utf8'en'UTF-8>, <Content-Transfer-Encoding: 7bit>> When uninstalled, I get this: <Content-Type: multipart/alternative; boundary="--==_mimepart_4dc3056f27a84_83df800d21b07422d"; charset=UTF-8>, <Content-Transfer-Encoding: 7bit>> As far as I can tell the latter one is the correct one, not the former one. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Core" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-core?hl=en.
