Insufficient system storage. The server response was: 4.2.2 Mailbox full RRS feed

  • Question

  • User-53430472 posted


    I'm getting the following errror when attempting to send an email via asp.net and system.net.mail.  The problem is that the mailbox is not actually full, I can succesfully send from my hotmail to this same emailaddress.  Is there a directory on my server or some setting in IIS that might be causing problems?  Perhaps I have too big of a queue of unsent messages or something like that ?

    Any help is much appreciated.

    Thanks !!



    Insufficient system storage. The server response was: 4.2.2 Mailbox full Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Net.Mail.SmtpFailedRecipientException: Insufficient system storage. The server response was: 4.2.2 Mailbox full

    Friday, March 30, 2007 4:52 AM

All replies

  • User-53430472 posted

    anyone have an idea on this ?  Can't seem to get it working ..=[


    much appreciated


    Sunday, April 8, 2007 2:30 AM
  • User-19377655 posted

    Hi Mike,

    "Insufficient System Storage" (AKA. Too many recipients specified) is an error sent by your ISP SMTP server to advise you that you have reached mails address amount limit for the current SMTP session.

     best regards..

    Tuesday, September 11, 2007 8:00 AM
  • User-53430472 posted

    Hi Diegofcap,

    This sounds more like it, but I'm wondering how can I resolve this problem?  My web app hasnt been able to send in ages =[




    Thursday, September 27, 2007 7:35 PM
  • User-19377655 posted

    Try to use another SMTP Server or configure your SMTP to accept more messages in queue.

    Friday, September 28, 2007 3:36 PM
  • User-2047548518 posted


    I just received the same error and the solution is pretty easy  (and stupid at the same time) sometimes the email that you are sending has an invalid email address. The error doesn't explain something like that but it's true. I had the same one but that exception is raised only with emails that are being sent to fake emails (writed by me just to perform testing).

     This answer is too late for your question, but maybe it's helpful to future references.




    Monday, January 14, 2008 2:01 PM
  • User-1082374796 posted

    try to increase web space for the application and emails 

    Tuesday, November 17, 2009 3:57 AM