Smtp Authenticsation, SMTP authenticsation for non local
2019-09-20 - hschneider, Admin
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Smtp Authenticsation, SMTP authenticsation for non local| GrassIsForCows |
Posted: Dec 19 2014, 03:59 PM
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Newbie  Group: Members Posts: 3 Member No.: 8807 Joined: 20-February 13  |
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? |
 
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| GrassIsForCows |
Posted: Oct 6 2015, 08:37 AM
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Newbie Group: Members Posts: 3 Member No.: 8807 Joined: 20-February 13 |
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.
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| dolem98 |
Posted: Feb 18 2016, 09:20 AM
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Newbie Group: Members Posts: 23 Member No.: 1275 Joined: 19-August 04 |
Pop before SMTP should use the IP address- are you sure you tested it correctly?
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| GrassIsForCows |
Posted: Feb 20 2016, 01:27 AM
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Newbie Group: Members Posts: 3 Member No.: 8807 Joined: 20-February 13 |
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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