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Brian_Ganino_13's avatar
Brian_Ganino_13
Icon for Nimbostratus rankNimbostratus
Aug 14, 2013

Unable to Relay from a new Hub Transport server.

HI all,

 

I have added a new Hub Transport in my Exchange environment and also added into a SMTP Virtual Server in the F5 to balance the SMTP relay.

 

The problem I have is when a user tries to send out an external e-mail thorough the Virtual Server using the new server, it's getting "Unable to relay", no problem when connects to other both. no problems when the user sends out to local e-mail addresses.

 

The SMTP connector on the three servers are configured equal.

 

Does anyone know what could be the problem?

 

Any help will be appreciate.

 

application delivery
devops
iRules
microsoft

2 Replies

  • mikeshimkus_111's avatar
    mikeshimkus_111
    Historic F5 Account
    Aug 14, 2013

    Hi Brian, is there any more info in the error message, an error code for example?

     

    If the clients use the new server but bypass the BIG-IP, does it work or does it fail too?

     

    thanks Mike

     

  • Brian_Ganino_13's avatar
    Brian_Ganino_13
    Icon for Nimbostratus rankNimbostratus
    Aug 15, 2013

    The error code is the known 550.5.7.1 Unable to Relay.

     

    When I bypass the BIG-IP, adding my computer IP address in the "Receive mail form..." section, the e-mail goes out normaly.

     

    Thanks,

     

    Brian