Email on Iphone tries to send thru old account I have set up two IMAP email accounts on 1 Iphone. Both accounts are set to send via their respective outgoing email server. The first account sends emails properly. The second account tries to send outgoing email via an old mail server that no longer exists.

I have deleted the 2nd account multiple times and re-added it from scratch each time but it still insists on sending via the old non-existent mail server. Is there some other place where this is stored? Any suggestions on how to fix this?
If using the default mail app,

Settings > Mail, Contacts, Calendars > (pick account) > (click account again) > Outgoing mail server

You should be able to configure which SMTP server will be used for the account.