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XMail Forum > XMail Server > Smtp Authenticsation

Posted by: GrassIsForCows Dec 19 2014, 03:59 PM
I'm using XMail on a QNAP NAS.

I want to set up authentication for all non-local domains. But I want to receive mail for local domains without authentication.

Right now it is "POP before SMTP". But that is no good because if I am logged in for POP anyone can send SMTP if they pretend I am the sender.

On my old server "POP before SMTP" meant they had to send from the same IP as the POP login.

How can I set this so no one can use it as a spam relay?

Posted by: GrassIsForCows Oct 6 2015, 08:37 AM
So judging by the lack of replies, no one knows how to set up "POP before SMTP" in a way that spam is not relayed.

Posted by: dolem98 Feb 18 2016, 09:20 AM
Pop before SMTP should use the IP address- are you sure you tested it correctly?

Posted by: GrassIsForCows Feb 20 2016, 01:27 AM
How could I have tested it wrong?

As long as I am logged in from POP3 anyone from any IP can send mail as long as they use my email address as the sender.

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