Incoming messages are received from the mailing program and then forwarded to a mailer. The mailer then distributes each message to the system which matches the specified recipient address.
Generally under Unix and Windows NT, the mailing program sendmail is used. Under OS/400 the IBM product AnyMail/400 is used instead of sendmail. For further information on how you configure AnyMail/400 for the SAP Internet Mail Gateway, see the IBM documentation AnyMail/400 Mail Server Framework Support V4 (SC41-5411). For background information, see the IBM documentation AS/400 Electronic Mail Capabilities (SG24-4703).
The mailer that the messages are transferred to is determined when using mailing program Sendmail in the configuration file Sendmail.cf. The following mailers are predefined there:
· a local mailer
The message is sent to a local user on the same machine.
· a TCP mailer
The message is sent to a machine which is connected via TCP/IP (Transmission Control Protocol / Internet Protocol)
· a UUCP mailer
The message is sent to another UNIX machine via a modem (UUCP is the abbreviation for UNIX to UNIX Copy Protocol).
The SAP Internet Mail Gateway contains the SAP mailer which takes the Internet messages from the mailing program and forwards them to the SAP system. The SAP mailer must therefore be added to the configuration file and the information regarding which Internet messages should be transferred to the SAP mailer must be entered.
Outgoing messages are forwarded by the SAP Internet Mail Gateway to the mailing program. The sender is the user under whom the SAP Internet Mail Gateway runs. If the mailing program then transfers the message to the Internet, it is not this user but rather the user who originally sent the message from the SAP system that is specified as the sender address.
In order to adapt the mailing program configuration file to the SAP Internet Mail Gateway, you must make the following changes in the file:
· Enter the SAP mailer definition.
· Establish the rules regarding which messages are transferred to the SAP mailer.
· Specify that it is not the user under whom the SAP Internet Mail Gateway runs who is entered as the sender of the Internet messages but rather the relevant SAP users.