We are currently running a Microsoft Exchange 2003 environment with a front end Server that sends mail to our Sonicwall Smarthost which in turn delivers the mail to the Internet. There are 2 back end servers that hold the Exchange mailboxes. We recently implemented an Exchange 2007 configuration in anticipation of migrating from the 2003 environment over a period of time. The implementation of the 2007 environment went perfectly and we are able to run both systems concurrently and transfer mail with no issue. Unfortunately, our Sonicwall Smarthost failed and we opted to go with an external provider (McAfee SaaS formerly MX Logic). This has created some transport issues. We would like to make the Exchange 2007 Hub Transport server the primary “gateway” to the McAfee service. We have made all of the configurations to do so and there are no issues when sending from the 2007 mailboxes. However, when sending from the 2003 environment to the 2007 hub transport server we experience the following error intermittently. - >>
A configuration error in the e-mail system caused the message to bounce between two servers or to be forwarded between two recipients. Contact your administrator.
<RFGATEMAIL.RFEK.com #5.4.6 smtp;554 5.4.6 Hop count exceeded - possible mail loop>
On the 2003 FE Server there is a send connector that is configured as follows:
• Forward all mail through this connector to the following smart hosts -> rfvhubcas.rfek.com (2007 Hub Transport Server)
• Local Bridgeheads ->Server: RFGatemail Virtual Server:Default SMTP Virtual Server
Could someone assist in adjusting the configuration to eliminate this error?
Thank you in advance for your assistance.