Andre Lorenz wrote:

> Hi,
>
> i'm using qmail for some time. and i'm not shure if relaying is
> completely prohibit.
> i've checked with several web-based rely tools, but i'm not shure if my
> qmail is a complete closed relay.
>
> is there a way to check this for getting 100% shure ?
>
> i would be happy if someone is pointing me to some good howtos or links
> where some test descriped.

$ telnet your.mail.server 25

EHLO
MAIL FROM: user@example.com
RCPT TO: user@externaldomain.com
DATA
Relay test
.

Substitute "user@example.com" and "user@externaldomain.com" to use a
domains which aren't hosted at your server. If the mail goes through,
you have an open relay.

Regards,
Kim
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Andre Lorenz escribió:
> Hi,
>
> i'm using qmail for some time. and i'm not shure if relaying is
> completely prohibit.
> i've checked with several web-based rely tools, but i'm not shure if
> my qmail is a complete closed relay.
>
> is there a way to check this for getting 100% shure ?
>
> i would be happy if someone is pointing me to some good howtos or
> links where some test descriped.
>
> thx
>
> Andre

Here are some links to tests you can perform on your mail server.


http://www.spamhelp.org/shopenrelay/shopenrelaytest.php

http://www.mxtoolbox.com/diagnostic.aspx

http://www.abuse.net/relay.html

http://www.cyberciti.biz/tips/test-mail-server-for-an-open-relay.html

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