On Tue, May 27, 2014 at 07:59:04AM CEST, Tom Kinghorn <thomas.kingh...@gmail.com> said: > Morning list. > > Is it possible to limit port 587 access to users who are known to be > traveling outside your network (foreign countries)? > > We have a user who cannot access port 25 and as such I am looking at the > submission port, however, do not want to open it up to the net. > > many thanks > Tom
To be sure the right person uses the port you should act at the authentication level. You may have an authentication system which only allows some people (doable with a ldap or *sql auth, by looking at a specific attribute allowing externel login).