Previous 1 2 Next 15 Replies Latest reply: Sep 30, 2010 5:46 PM by pgk2008
jeffscab Level 1 (0 points)
I have two e-mail accounts on my iPhone 4. Occassionally, I get a message that reads "Cannot Send Mail. A copy has been placed in your Outbox. The recipient (address) was rejected by the server because it does not allow relaying."

The recipients are always individuals to whom I have sent e-mails in the past with no problem (one was my boss!). After the message sits in the outbox for a while, it's sometime sent with no further problem. Anyone else experiencing something like this? HELP!

iOS 4
  • Bill Heiden Level 1 (60 points)
    We are seeing the exact same problem. More details to follow.
  • patricka12 Level 1 (0 points)
    YES!!! Someone please help?
  • paulcb Level 6 (19,110 points)
    Assuming this happens when connected to cellular, make sure your SMTP server is allowed by your cellular carrier, i.e. add one that your carrier accepts. Settings > Mail > account > SMTP
  • Monty1945 Level 3 (690 points)

    In most cases you will need to use the SMTP server that the ISP provides for the service that you are using, if you are using WiFi. If you are home, use that one, at work, or school, then contact your IT folks. Most all ISPs will not allow other SMTP servers to be used, only their own.

    You can reference multiple SMTP servers in your phone. If you are using non-WiFi, like 3G, then you will use your carrier provided SMTP. You can also plug in the SMTP of your email program, like,, for AT&T, etc.

  • johnny lightning Level 1 (0 points)
    My problem is similar though not exactly the same. Has only occurred since updating software for iPhone 3G this morning. I can receive emails without problem, but no longer able to send them - had no issues with this previously.
    Error message says 'The connection to the outgoing server ... failed etc etc'. Have tried restarting the phone. Don't particularly want to have to re-enter the relevant server information etc .. any suggestions anybody??
  • prafalow Level 1 (0 points)
    I'm having the exact same problem now that I just got an iphone 3GS. Doesn't happen with all emails I send, but many. Can someone help with settings instructions for those non-teckies of us?
  • Wenderino Level 1 (0 points)
    I'm having the same problem since updating my phone last night - I can receive, but not send. Would really appreciate some help
  • L. Powow Level 1 (35 points)
    If your having issues sending mail, try changing the outgoing host name to (For ATT customers). Leave username and password blank.

    This usually resolves any sending issues on the iphone.

    Hope that helps.
  • paulcb Level 6 (19,110 points)
    As mentioned in this thread, have you checked your SMTP settings?
  • iandes Level 1 (0 points)
    I am also in a similar boat.

    Recently upgraded my phone (iphone4) to iOS 4.1

    Now it only intermittently sends emails over 3G, often just sitting there with the spinny wheel and saying 'Sending' for ages, but is fine over wifi. Including wifi provided by my service provider, Vodafone, in the UK. SMTP settings match those provided by the provider (and I have even reconfigured my account on the phone to check), so there is no obvious reason for it not to work.

    Anyone else seen this? It feels like the phone is somehow not quite connecting with the server properly and then timing out.
  • kelly9159 Level 1 (15 points)
    I had this same problem. Could receive messages, but not send. Go to settings-->mail, contacts etc-->choose the account in question then delete account. After, go back and add the account back. I have Yahoo and they apparently changed some of their settings in their outgoing mail server. Once I deleted the account and re-added, everything worked fine. Try it.
  • iandes Level 1 (0 points)
    Tried this, I still get intermittent service. Sometimes, I can send mail. Sometimes, it doesn't work. This is sat in the same location with no changes to the config, just that sometimes the phone seems to get itself stuck.

    Even restarting the phone doesn't seem to help when it gets like this - I just have to wait until it decides to start working again. Very frustrating and hard to tie down - and just the sort of thing that if I took it in to get tech support, would work fine when in the store!
  • johnny lightning Level 1 (0 points)
    thanks kelly - working fine again!
  • RuDa Level 1 (0 points)
    Thank you. This solution worked on our 2 iphones. The problem began when we synced with Microsoft Outlook 2007.

    I think I ca clarify the solution by adding the folowing. Go to settings, then mail and click on the account. Go to SMPT and tap it. That brings up a screen with the primary server and the other STMP servers. Turn on the servers for the accounts on which you have an email.
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