We have two production Sakai installations running on a single server and needed to configure sendmail to forward requests to the appropriate instance. Each installation uses a different virtual host, for example, sakfoo.myorg.edu and sakbar.myorg.edu. Mail sent to either host is handled by sendmail on port 25, configured to relay the mail to the appropriate instance. The hostnames are set in the sakai.properties along with the appropriate james port settings:
sakai.properties
sakfoo.myorg.edu
... # the DNS name of the server serverName=sakfoo.myorg.edu ... # SMTP port on which James runs. Default is 25. Recommend running on 8025, and using a standard mailer on 25 to forward mail to Sakai. smtp.port = 8025 ...
sakbar.myorg.edu
... # the DNS name of the server serverName=sakbar.myorg.edu ... # SMTP port on which James runs. Default is 25. Recommend running on 8025, and using a standard mailer on 25 to forward mail to Sakai. smtp.port = 8125 ...
sendmail
access
I'm not sure if this is required (or even recommended), but we have the hostname for each listed as a relay in access:
localhost.localdomain RELAY localhost RELAY 127.0.0.1 RELAY sakfoo.myorg.edu RELAY sakbar.myorg.edu RELAY
mailertable
This file specifies special delivery mechanisms for individual hosts. In this case, since we have two different installations that will require delivery, we specify a custom handler for each:
sakfoo.myorg.edu esmtpfoo:[localhost] sakbar.myorg.edu esmtpbar:[localhost]
sendmail.mc
Add the handler definitions to the end of sendmail.mc:
MAILER_DEFINITIONS
Mesmtpfoo, P=[IPC], F=mDFMuXak, S=EnvFromSMTP/HdrFromSMTP, R=EnvToSMTP, E=\r\n, L=990,
T=DNS/RFC822/SMTP,
A=TCP $h 8025
Mesmtpbar, P=[IPC], F=mDFMuXak, S=EnvFromSMTP/HdrFromSMTP, R=EnvToSMTP, E=\r\n, L=990,
T=DNS/RFC822/SMTP,
A=TCP $h 8125