There isn’t transport stack in the Microsoft Transporter Suite for Lotus Domino. We have switched the transport stack from using the Exchange Development Kit Gateway from the Connector for Lotus Notes which was available in Exchange 5.5, Exchange 2000 and Exchange 2003 to using SMTP between Domino and Exchange. Yes, you read it right, SMTP, this means no more MFCMAPI/GWCLIENT to check out the MTS-IN and MTS-OUT on the Connector Server or exchange.box/exchange.bad on the Domino server.
The key reasons were to increase performance and reliability between the two messaging systems using a standard industry protocol. It also takes advantage of the iCAL format when sending and receiving meeting request information between the two messaging systems.
Currently we have tested and supported two methodologies for deploying this strategy in your environment. The first methodology is using sub domains within a single domain, for instance Contoso.com would route between the two systems by using exchange.contoso.com for Exchange and domino.contoso.com for Domino. The second methodology is if the domains were different, such as an acquisition scenario, contoso.com buys litware.com and they only need to synchronize information and send/receive e-mail. With both of the previous scenarios you use the same options in Exchange and Domino. In Exchange you will be using the configuration options for Send and Receive Connectors, Remote Domains, and E-mail Address policy. In Domino you will be using the configuration option for Foreign SMTP Domain Document and Connection Documents. This is all SMTP routing based, the majority of this is documented in our help file within the Transporter Suite documentation. Based on feedback from the beta, we will be working to write some more specific scenarios in an upcoming document. More information can be found about SMTP routing from the two web sources listed here:
Microsoft Exchange 2007- http://technet.microsoft.com/en-us/library/bb124558.aspx
Lotus Domino –IBM