On 3/21/19 1:18 AM, Yassine Chaouche wrote:
On 3/20/19 7:35 PM, Matus UHLAR - fantomas wrote:
On 20.03.19 16:26, Yassine Chaouche wrote:
Requiring authentication to relay on 25 will also get rid of spam.
it will also get rid of incoming mail from other mail servers...
Which we want anyway, unless we're final destination, no ?
Yassine.
If it is not an MX server than there is no need to use port 25 at all.
If it is an MX server then it MUST accept unauthenticated SMTP on port
25. MTA clients relaying mail to an MX server do not authenticate.
