On Sun, 18 Mar 2012, Reindl Harald wrote:
Am 18.03.2012 19:14, schrieb Rachid Abdelkhalak:
Hello List,
Can i force users to SMTP-Auth when they use SMTP commands (Telnet 25 port of
my server) to send emails from my
domain?
If it's not possible, Is there any additional filters can i apply authenticate
users trying to use SMTP Commands to
send emails from the server using Telnet port 25?
there is simply no differnce between telnet and any other MUA
you have restricted relay for authenticated users (hopefully
or you should shut down the machine) or not, the MTA is not interested
in which client submits a message
I'm using SMTP Auth for all connections coming from networks NOT in
mynetworks. When i'm using a clinent such as Outlook, Alpine... from an IP
not in mynetworks, i'm prompted fot authentication. But when i'm doing a
telnet from the same IP, i'm not and i'm allowed to send emails from my
CEO @myowndomain.tld to any address for example.
I'm looking for a solution that can allow me to prevents users to spoof
email addresses using Telnet port 25.
Thank you
