outlook express outgoing mail issue in xp RRS feed

  • Question

  • Hi,

    In my company, we use windows mail who ever has OS vista and Outlook Express 6 who ever has OS xp pro. from couple of days we are facing problems of outgoing mails from outlook - Our webhosting server is in california and we are able to send/receive mail thru our webmail (squirrel mail).

    we are able to receive all mails but when sending mails the error is:
    An unknown error has occurred. Subject 'test mail', Account: 'mail.world-med.com', Server: 'mail.world-med.com', Protocol: SMTP, Port: 25, Secure(SSL): No, Error Number: 0x800CCC0B.

    When I tryrom run command telnet world-med.com 25 I get 2 kind of replies

    Reply 1.
     451 - The server has realised its limit for processing requests from your host - 451 Please try later.

     220-ib bur.lunarbreeze.com ESMTP exim 4.69 #1 followed by date and time.
     220 We do not authorise the use of this system to transport unsolicited, and/or bulk email

    My Os is Xp pro service pack 3, Centrino Duo 1.66ghz, 1 gb ram.

    thanks apreciate an early response.

    Tuesday, March 10, 2009 4:13 AM


All replies

  • Reply 2 is normal, but it is a non-Microsoft, non-Exchange server:

    Reply 1 is a temporary (retry) failure.  It could be a greylist (http://en.wikipedia.org/wiki/Greylist) or some other throttling by the ISP or host.

    • Proposed as answer by Xiu Zhang Wednesday, March 11, 2009 11:00 AM
    • Marked as answer by ishmael swim Saturday, March 14, 2009 4:47 PM
    Tuesday, March 10, 2009 3:49 PM
  • Hi Scott,

    As you have pointed out the mail server is the issue, I had to change the port settings of SMTP from 25 to 587, things are ok.

    Appreciate for your quick response, I learnt a great deal about exim.


    Ishmael Swim

    Tuesday, March 10, 2009 6:53 PM