Hi Everyone: I have a postfix server running for years, send and receive emails well with another servers and the email clients ( kmail) are in the internal trusted network.
In the near future i will require use the from outside of company ( internet ) and i found that some internet services on argentine block the port 25 making impossible connect the MUA with the postfix. So i think that i can open the postfix on a unprivileged port ( Ex 20025) These port normally are open ( because the customer check the cameras and other services). The question: 1) How i do that, ( i suspect that must be relatively easy) 2) Any extra security risk. (additional to the keep a service on internet) Best Regards Christian -- Be Free, Be Linux
