smtpport MSHTTP option specifies the SMTP or SMTP SUBMIT port to which MSHTTP will connect when submitting messages. The host(s) to which MSHTTP connects are set via the
smtphost MSHTTP option.
Normally the SMTP server or SMTP SUBMIT server to which MSHTTP submits would be a Messaging Server SMTP server or SMTP SUBMIT server -- see TCP/IP channels for a starting point discussion on configuration of Messaging Server SMTP and SMTP SUBMIT servers. So in particular, for the port(s) on which such a Messaging Server SMTP server or SMTP SUBMIT server listens, see the
service option, e.g.,
The default value is: 25