Hola Banier, podemos tener varios escenarios de migración de lotus a Exchange.
1.- https://technet.microsoft.com/es-es/library/bb124356(v=exchg.80).aspx
2.- http://software.dell.com/products/migrator-for-notes-to-exchange/
3.- Convertirlo a pst y luego migrarlos
4.- https://technet.microsoft.com/en-us/library/hh781036(v=exchg.141).aspx
Saludos,
Peter Chirinos | IT Consultant, MCP, MCSA, Microsoft Office Master, Software Developer, Microsoft Certified Professional, MAP , Microsoft Small Business Specialist, VMTSP Veeam, VMSP Veeam | @peter_chirinos