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Yes, I tried this earlier but I get <br />
<br />
x.x.x.x on port 25... Error - could not connect to server<br />
<br />
I figured the tool was broken - can someone try this against a known working server and see if you get the same error message?<br />
<br />

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Yes, I tried this earlier but I get

x.x.x.x on port 25... Error - could not connect to server

I figured the tool was broken - can someone try this against a known working server and see if you get the same error message?



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That's what you should get if it's not allowed - in your config files you should have your allowed networks, if the IP does not match, it's not allowed to use the smtp server.<br />
<br />

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That's what you should get if it's not allowed - in your config files you should have your allowed networks, if the IP does not match, it's not allowed to use the smtp server.



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How can I check that a specific Linux server is NOT acting as an open SMTP gateway?<br />
<br />
Ideally I would like to put in a place a regular script to check one of our boxes on a regular basis.<br />
<br />
Thanks<br />
BT<br />

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How can I check that a specific Linux server is NOT acting as an open SMTP gateway?

Ideally I would like to put in a place a regular script to check one of our boxes on a regular basis.

Thanks
BT


Checking a linux server for smtp open gateway

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.