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Pat, Mac Enthusiast
Category: Mac
Satisfied Customers: 171
Experience:  10 years of systems administration experience in mixed Mac and Windows environments
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I have been trying to send email and respond to email on my

Resolved Question:

I have been trying to send email and respond to email on my 3g iphone and it keeps coming back saying invalid sender address. I think everything is set up right so not sure what to do?
Submitted: 7 years ago.
Category: Mac
Expert:  Pat replied 7 years ago.
Go into Settings>Mail>YourEmailAccount. Look at "Address". You should see your e-mail adress there complete with the Does it look correct?
Customer: replied 7 years ago.
yes it says my address that I use for email
Expert:  Pat replied 7 years ago.
Its possible you are trying to relay e-mail through a server without providing proper authentication. What kind of e-mail account is this? Common types would be Gmail, Yahoo, Hotmail, or e-mail from your ISP ( for isntance)?
Customer: replied 7 years ago.
i went in and reset all my info and turned on the wifi and think is working now.
Expert:  Pat replied 7 years ago.
Ahh, then I was correct. You need to set up SMTP authentication to be able to send when you are not on your own Wifi. If you go back into the account settings and click on "SMTP" under "Outgoing Mail Server" you'll find a list of servers, or perhaps one server depending on how your phone is set up. Click on the Primary server and look at the settings. Chances are, you need your e-mail address under "User Name" and your account password XXXXX there as well. I can't be specific because I don't know what type of e-mail account you are using, but I'm guessing its e-mail from your ISP.
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