On 04/27/2011 08:07 PM, Keith Smith wrote:
Hey I wanted to verify I am not running an open relay. I asked the
question on the Phoenix Linux User's Group list and was given a link
that requires I install some software.
I thought I better ask here because I'm running Qmail Toaster on CentOS
5.6 and you guys are the experts.
I appreciate all your guidance and help!
--
Hey Keith,
Generally speaking, you want to be sure that the RELAYCLIENT="" variable
is not set. This is typically done in the /etc/tcprules.d/tcp.smtp file,
by making sure the variable is not mentioned *at all*. It's an
environment variable though, so it could be set in a number of other places.
Note, setting it to null as shown, is NOT the same as not having it set.
Setting it to null as above WILL create an open relay.
The best way to check is to use one of the services mentioned.
--
-Eric 'shubes'
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