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certificate issue - outlook error code 20 RRS feed

  • Question

  • Hello

    something strange today in my network.. my users are getting this error when open outllook:

    impossible connect to proxy server mail.myserver.com (error code 20)

    do I need to regenerate my certificate on exchange 2003? Ho ca i do it?

    thanks

    Monday, March 25, 2013 9:14 AM

Answers

All replies

  • Try putting this required URL in bypass list in IE.


    Thanks Prem P Rana MCSA Messaging 2003 MCSE 2003 Server MCTS MCITP Exchange 2007, 2010 Gurgaon, India http://blogs.msexchange-experts.com

    Monday, March 25, 2013 11:50 AM
  • Hi  ,

    Does the certificate includes SAN(Subject Alternative Name) for autodiscover and exchange external url ?

    Please also check if the root certificate is imported to client if you use a private CA issues the certificate.

    Outlook gives an error for Proxy Server Certificate:

    http://social.technet.microsoft.com/Forums/en-US/exchangesvrclients/thread/980846f8-e616-4150-9f6a-eaa85f06a76d


    Wendy Liu
    TechNet Community Support

    Tuesday, March 26, 2013 9:28 AM
    Moderator
  • There has been similar questions before this:

    Outlook gives an error for Proxy Server Certificate

    Here is a guide on how to request a new certificate:

    Generating a Certificate Signing Request (CSR)


    stefan@xperta

    Tuesday, March 26, 2013 10:22 AM
  • Hi ,

    • Please perform connectivity test

    https://www.testexchangeconnectivity.com/

    • The please go through the below KB article for certificate issues

    http://support.microsoft.com/kb/923575

    • For creating a self signed certificate using SelfSSL utility from Microsoft please go through below article

    http://www.howtogeek.com/107415/it-how-to-create-a-self-signed-security-ssl-certificate-and-deploy-it-to-client-machines/

    • To download SelfSSL utility download iis6 resource kit from below Microsoft link

    http://www.microsoft.com/en-in/download/details.aspx?id=17275


    Regards, Prakash Nimmala Skype : Prakash.Nimmala Email ID : prakash.nimmala@hotmail.com Whenever you see a helpful reply, click on Vote As Helpful & click on Mark As Answer if a post answers your question.

    Tuesday, March 26, 2013 5:47 PM