Am 06.04.2012 23:50, schrieb Joe Zeff: > On 04/06/2012 02:34 PM, Ed Greshko wrote: >> You seem to have 0 knowledge of how server to server email works. Please do some >> work to understand what actually transpires before you advise people. > > I'm talking about closing incoming connections from the Internet on Port 25, not outbound. Of course, depending on > your ISP you might not be able to connect to other servers on Port 25 when sending mail, but that's not what I was > referring to.boah you still did not get it boah - unbelieveable you still do not understand the topic if you are runnaing an MX you MUST accept incoming port 25 from the internet or how do you imagine you receive new mails from the world? YOU MUST OPEN PORT 25 there is nof if and when BUT you have to secure your configuration that you only accept incoming mails for domains you are resposnible and every relay needs authentication and not, authentication is not limited to 587 you can configure every port for smtp/tls/sasl
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