The two emails:
email@example.com ( Previously Network Solutions, now a Google Apps account ) other_email@other_website.com ( A Network Solutions email account )
I changed my MX Records for firstname.lastname@example.org about 7 months ago to point to Google Apps.
Everything works swimmingly, however :
If I set the mail for other_email@other_website.com to forward to email@example.com, then the email gets sent to the old Network Solutions account and not the new Google one, despite the fact that all the MX records clearly only state Google MX Records.
Alternatively, if I were to simply firstname.lastname@example.org from other_email@other_website.com then it goes through correctly.
This concludes that if any email address is to send to email@example.com, the MX records appropriately redirect to Google Apps. Unless I am using the forwarding system in Network Solutions. Then the account's MX records are ignored, and it is sent to Network Solutions' default MX records instead.
Does anyone know how to correct this problem?