We send emails to clients and bcc each email sent to a few mailing lists. We re using:
- Google apps
- From email: is in our domain
We ve been doing this for a few months now but as of 11 am ET today, Outlook users on any of the mailing lists have been seeing: "From my-mailing-list@mydomain.com on behalf of Domain Emailer".
The process that sends the email uses SMTP through Javamail.
Best Answer
In case some one is wondering why this happened. I inspected the email headers closely and found this:
Sender: my-mailing-list@mydomain.com
Google starting adding this yesterday and thats what caused Outlook to say "on behalf of" all of a sudden.