Up until recently, my customers could enter a yahoo.com address as the "From" address and send a group email via my web form. Yahoo's (DMARC) changes now instruct other providers (such as gmail) to reject email that is not actually sent from yahoo's website.
What's the best workaround for this problem? I noticed sometimes I see a "sent of behalf of" message in email. Can I send the mail from, for example, a firstname.lastname@example.org address and somehow make the reply go to the user's yahoo address? Do you have any other ideas on how to let yahoo users send group emails and get the replies?