SMTP transmission failure. What's that?!

I'm posting this for my mother. She's got an iMac running Leopard & she downloaded latest software updates this morning - so as far as I can tell she'd up-to-date. She's also got a 3G iPhone which syncs to her iMac which again is up-to-date as far as updates go.

Her problem is when sending emails an error message comes up saying it can't send mail and offers an alternative server smtp.me.com:(her apple id) which it's already set to anyway and when she clicks 'try alternative server' it doesn't help. I went into her mobileme account remotely (I'm 20 miles away!) and then got her to send me an email from her iMac & I also sent myself one from her mobileme account.

The error message for both reads as follows:

Reason: SMTP transmission failure has occurred
Diagnostic code: smtp;554 5.7.1 You have exceeded your message sending limits. Try again later. [slot 2]

Any one got any helpful tips?

MacBook Aluminium, Mac OS X (10.5.8), iPhone 3G

Posted on Aug 8, 2009 7:43 AM

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3 replies

Aug 8, 2009 8:24 AM in response to Jimjaminy

I meant nothing related to space issues, nor attachments. Such limits, if involved, are triggered by the total number of recepients in the period of time, and can result from forwarding, or replying to All on a message with lots of people in the distribution list.

Do I understand correctly that you cannot send using her account either?

If she has triggered this type of limit, then switching the SMTP to one provided by her ISP may allow sending to resume until the time limit expires.

Of course this limit may be some type of mistake for her, but the message would point this way.

Ernie

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SMTP transmission failure. What's that?!

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