iPhone 4S, with all updates. I have two gmail accounts, primary and secondary. I have both accounts set to use smtp.gmail.com, with password authentication for each account. Primary account can send just fine using SMTP. Secondary account cannot send through it's "own" server (i.e., firstname.lastname@example.org) and sent messages failover to the primary account server (email@example.com). Of course, that means recipients see the email as coming from the primary account, which is totally contrary to the reason I have it. Settings for smtp are identical, except for username and password. I can send using the secondary account in Mail on my Mac, using that server, with messages showing properly (i.e. from firstname.lastname@example.org). Any ideas what's going on?