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qmail & relay

 

 

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andre at ns-cw

Jun 16, 2008, 8:21 AM

Post #1 of 3 (387 views)
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qmail & relay

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
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Version: AVKA 18.298 from 16.06.2008
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kchr-list-qmail at rac

Jun 18, 2008, 2:26 AM

Post #2 of 3 (342 views)
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Re: qmail & relay [In reply to]

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[at]example.com
RCPT TO: user[at]externaldomain.com
DATA
Relay test
.

Substitute "user[at]example.com" and "user[at]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
--
|_|O|_| Kim Christensen
|_|_|O| Public key: http://rac.nu/kchr.asc
|O|O|O| Web home: http://blog.technopragmatics.org

This is... No offence, but you are a robot aren’t you?
--------------------------------------------------------
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/\ www.asciiribbon.org - against proprietary attachments


infosis at abelsonsa

Jun 18, 2008, 5:26 AM

Post #3 of 3 (345 views)
Permalink
Re: qmail & relay [In reply to]

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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