Exchange Notes Connector Mail Flow

Migration of Lotus Notes to MS Outlook is quite aSMTP categorizes and routes mail to the target
common phenomenon and is carried out to eitherrecipients.
cut IT administrative costs or easeMail Flow from Exchange to Notes
communication. But before coming to the1.
conclusion of migration, it’s important to knowExchange mailbox owner sends mail addressed to
about mail flow when Exchange Notes ConnectorNotes/Domino user
is used for migration. The knowledge of Mail flow2.
helps user in understanding this process when youMessage is categorized and routed to MS
are attempting to troubleshoot mail flow issues.Exchange Connector for Lotus Notes
Mail Flow from Notes to Exchange3.
1.The store driver moves the message into SMTP
Lotus Notes/Domino user sends mail that isService’s MTS-IN folder
addressed to an Exchange mailbox owner. Notes4.
system needs to be configured to recognizeStore.exe submits the mail to MTA
Exchange system as a “Foreign Domain”.5.
Lotus Notes Mail Router should deposit the mail toMTA makes another call to the routing engine and
Exchange.box (default name) database on Lotusdetermines that the apt queue is the
Notes Serverconnector’s X400 Queue in MTA
2.6.
Lsntsmex.exe fetched mail from the Notes'Store.exe picks the mail from MTA and puts it in
Exchange.box and converts them from NotesMTS-OUT folder of Exchange Notes Connector
format to Exchange MAPI format by using Lotus7.
Notes API and then puts the same in Notes MailLsmexout.exe performs address translation and
Connector’s READY-IN MAPI folder.moves the mail from MTS-OUT to READY-OUT
3.8.
Lsmexin.exe performs address translation andLsmexnts.exe performs message body translation
Active Directory lookup for intended recipient.from Exchange MAPI to Notes format and
Then it moves the mail from READY-IN folder tomoves the mail by use of Lotus Notes API calls
the MTS-IN folder.to Mail.cox on the Notes system. Lotus Notes Mail
4.Router is responsible for delivery to apt Notes
Store.exe (MSExchangeIS service) moves themailbox on apt Notes server
mail to Message Transfer Agent (MTA,This is how the Mail flow from Notes to Exchange
Emsmta.exe) and then MTS puts the mail on theand vice-versa takes place. This entire process of
MTA’s SMTP queue, viewable under themail flow is important to understand as it helps
server’s X400 Queues in Exchange Systemyou to troubleshoot mail flow issues while
Manager (ESM).migrating from lotus to outlook. However, if you
5.don’t want to get into so much of details and
Store.exe picks up the mail from MTA and puts itdescriptions, then migration using third party tool is
on the SMTP Service’s MTS-OUT queue.the best bet. These tools are devised for
(This queue is viewable in Performance Monitorperforming migration only and therefore, you
System Monitor).don’t have to worry anymore for data loss
6.issues.