I recently added a second email account (Verizon) and I'm having trouble sending mail when the From address is not a Verizon address. I get the following error msg:
550 5.7.0 From address mismatch: envelope <firstname.lastname@example.org> and header <"Hillman, Howard (email@example.com)"@nodomainspecified.verizo n.net>
firstname.lastname@example.org is my e-mail "forwarding for life" and relays to the Verizon account. If I leave the From address blank, the mail gets sent without problem. It uses the Verizon From address. When I use my other, older ISP account (a-commvds.com) I can put my mit.edu address in the From without problems. Is Verizon trying to prevent spam here? Is there a way for me to fix this?