Am 18.03.2012 19:27, schrieb Rachid Abdelkhalak: >>> 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 guess you do not understand SMTP Authentication you are NOT prompted if the RCPT is in your own domains this is because you are not try to relay that way mail delivery works from other MTA's again: there is no difference between telnet and any other MUA spoofing protections has nothing to do with SMTP Auth
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