Forum Moderators: phranque

Message Too Old, No Replies

How do I get off this blacklist

My server is apparently an open hc proxy!

         

Status_203

8:13 am on Aug 18, 2009 (gmt 0)

10+ Year Member



Just got home from hospital to discover that my server is on the njabl blacklist. Ironically I discovered this because a forum welcome email to a spammer (.ru email address) bounced ;).

According to their site my server is an open proxy on the HTTP CONNECT protocol.

Full output


x.x.x.x:hc:2089: >> CONNECT y.y.y.y:25 HTTP/1.0\r\n
x.x.x.x:hc:2089: >> \r\n
x.x.x.x:hc:2089: >> help njablproxytest\r\n
x.x.x.x:hc:2089: << HTTP/1.0 200 Connection established\r\n
x.x.x.x:hc:2089: << \r\n
x.x.x.x:hc:2089: HTTP request successeful (200)
x.x.x.x:hc:2089: << 220 rt.njabl.org ESMTP Sendmail 8.11.6/8.11.6; Wed, 4 Feb 2004 10:58:31 -0500\r\n
x.x.x.x:hc:2089: << 214-2.0.0 njabl.org proxytest response to x.x.x.x\r\n
x.x.x.x:hc:2089: << 214 2.0.0 End of HELP info\r\n
x.x.x.x hc:2089 open

where x.x.x.x is my server ip and y.y.y.y is unrecognised, presumably something to do with njabl's testing.

I can't make head or tail of this. Don't even know whether I should be looking at the web server or the email server!

Where do I start?

Status_203

9:36 pm on Aug 19, 2009 (gmt 0)

10+ Year Member



After some fruitless research, it occurred to me that there must be some way of telling what programs were listening on what ports. One more search led me to


netstat -npl

and... I didn't have anything listening on port 2089! Requested removal via njabl's removal form. All sorted.

At which point of course I realised that if I'd paid a bit more attention to some of the other details ("4 Feb 2004" is well before I took over the IP address) I could have gone straight to the removal form as a first response.

Ho hum. I learnt what my first step would be I suppose :)

Suppose it all also proves it's worth checking your IP addresses against the blacklists, at the very least when you first get them.