This is a discussion on switchchannel clarification - VMS ; Hi. I'm in the process of configuring pmdf to require authenticated smtp for specific subnets within our university network. I thought I understood the process pretty well, but I think I need some clarification on the switchchannel options. Basically, I've ...
I'm in the process of configuring pmdf to require authenticated smtp for specific
subnets within our university network. I thought I understood the process pretty
well, but I think I need some clarification on the switchchannel options.
Basically, I've setup a mapping table with the networks requiring authenticated smtp,
! IP's requiring SMTP authentication
! test addresses
! modem subnets
I've then added a routing entry to pmdf.cnf of the format
! Do mapping lookup for networks requiring authentication
Which is located above the entry to route internal hosts to the tcp-internal
The "defaults" channel is defined as,
! The defaults channel
defaults logging noswitchchannel
And the TCP-AUTH channel is defined as,
tcp_auth smtp single_sys mx subdirs 20 maytlsserver mustsaslserver msexchange
What I've found is that unless I add an 'allowswitchchannel' option to the 'tcp_auth'
channel, this configuration doesn't work. According to the documentation, this pretty
much makes sense to me, but then I'm not certain how the normal SASL configuration (as
provided in the manual section 14.4) works since it defines a 'noswitchchannel' option
on the 'tcp_auth' channel, which according to the manual says "noswitchchannel specifies
that no channel switching should be done to or from the channel".
Any clarification on this would greatly appreciated.
Wright State University