Re:Google: Do what you want with Reader, but don't kill CalDAV
by csixty4 on Friday March 15, 2013 @01:06PM
(#5381601)
Gmail sends a Sender: header with the account's primary email address, which some email programs treat as the "actual" sender. Some mail programs display this as "From [email protected] on behalf of [email protected]" and then those programs use the primary as the return address.
According to Google, they don't include this header if you upgrade to Google Apps for Business.
We have one primary domain and 15 alias domains. Email Example: [email protected] gets an email, when they reply it stays set to the alias, it doesn't change to the primary domain.