1. DaBoz's Avatar
    Help...

    When I try to send email using 3g I get: "Cannot send mail the sender address was invalid"

    Turn on wifi and email goes, no problem.

    Any thoughts??
    03-19-2010 02:29 PM
  2. Alli's Avatar
    Without more information on your email provider we can only guess...but my guess is that your provider doesn't allow relaying and when you are on WiFi you are using your mail provider and when you use 3G you are trying to relay. You may need another SMTP client to send using 3G.

    Just a thought.
    03-19-2010 02:41 PM
  3. DaBoz's Avatar
    Email is through roadrunner.com

    My Blackberry worked with no problems.

    Sometimes, 3g will work with my iPhone, not often.
    03-19-2010 04:55 PM
  4. Jeremy's Avatar
    Email is through roadrunner.com

    My Blackberry worked with no problems.

    Sometimes, 3g will work with my iPhone, not often.
    Something sounds like it is not set up properly. I'd check with your internet service to find out the proper settings and double check them. The reason your Blackberry worked fine was because it is handled directly from RIM and not your internet service.
    03-19-2010 05:55 PM
  5. DaBoz's Avatar
    Something sounds like it is not set up properly. I'd check with your internet service to find out the proper settings and double check them. The reason your Blackberry worked fine was because it is handled directly from RIM and not your internet service.

    Thanks, will do that.
    03-19-2010 05:57 PM
  6. DaBoz's Avatar
    Fixed it. Turned off the roadrunner server and turned on AT&T SMTO Server for outgoing mail.

    Google is your friend. Found the solution on PC Mag discussion board.
    03-19-2010 10:18 PM
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