Cannot Send email from iphone

Discussion in 'Mac Basics and Help' started by iMichael72, Jul 31, 2008.

  1. iMichael72 macrumors regular

    May 19, 2007
    Maryland, U.S.A
    I have searched the forums, but did not find an answer to this.

    When I try to send an email from my iPhone it says: Cannot Send Mail The Sender address was invalid

    I have a first gen iPhone ver 2.0

    The Outgoing Mail Server SMTP is:

  2. blodwyn macrumors 65816

    Jul 28, 2004
    Portland, Oregon
    When you try to send, are you connected via your Comcast connection? I have a feeling that the Comcast SMTP server won't send unless you're connected via their network
  3. iMichael72 thread starter macrumors regular

    May 19, 2007
    Maryland, U.S.A
    No, I'm not connected. I have sent emails before though, while at work, and it has worked.
    But this time it is not working. I don't send many emails from my iphone, usually just check it.

    I did have a problem with my email not working at all, after I started using Mobileme, not sure if this is related or not.
  4. MikeOliverAZ macrumors newbie

    Jul 12, 2008
    Invalid Sender fix

    I had the Cannot send invalid sender error message.

    I went to Settings -> Email.._ SMTP and turned off the and turned ON the AT&T smtp server and almost immediately heard the "Swoosh" of the email going out.

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