Recently moved to BT - My server is on a blacklist?

Draeger

Draeger

Draeger

Soldato
Joined
4 Feb 2004
Posts
13,407
Location
Écosse
Recently moved to BT broadband from Sky. Everything went fine with the move.

I tried to email a friend at work today and got a bounce-back. It read:-

SMTP error from remote mail server after initial connection:
host mailhost7.******.com [***.**.**.**]: 554-mailhost7.******.com
554 Your access to this mail system has been rejected due to the sending MTA's poor reputation. If you believe that this failure is in error, please contact the intended recipient via alternate means.
Click to expand...

I went to Senderbase.org and ran my hosting server IP where the email is set up on my domain through it and it showed up that the server had 'poor' email reputation. However running the IP address through MxToolbox.com shows the IP coming up clean. I've submitted a support ticket to my host to see if they can look into it anyway.

So I then wondered if the server that my ISP has got me on was clean. Ran it through MxToolbox.com and its showing it is blacklisted 4 times. Is there anything I can do about this? Screenie below:-

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Who hosts your email? Or do you host your own mail server? I'm confused by the mention of your hosting service - do you have a hosted email service or not? The way things are set up it looks like you're trying to use a server hosted on your own dynamic IP service as an SMTP server, at which point I'm surprised this is the first time you've had issues.
 
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Your mail server may be on the same box as a spammer's server or a hijacked server and thus has the same IP address. Ask your hosting provider to move it.
 
Sorted. I've got a Linux shared hosting package and a couple of domains and websites sat on it, which is where my email for the address in question sits. After I submitted a support ticket to my hosts last night they investigated it and found that as Quartz mentioned, someone on the same server box had been sending spam out. They have suspended the offending account and have submitted whitelist requests were applicable. So it would appear that despite the BT IP being on a blacklist, this wasn't the cause of the actual email problem.

Interestingly though, last night I tried rebooting the Home Hub to be assigned a different IP address from BT. I did this 7 times and each and every time the new IP address came up as blacklisted on as many as 8 different lists according to MXToolbox. Apparently this is 'normal'? Interesting to note that one of the blacklists on the search results was SORBS which after digging up some info on is an outfit which many believe to be a complete scam operation.
 
BT have requested that their entire dynamic block is blacklisted, as there is just no legitimate need to host an SMTP server on a dynamic residential IP, and tons of downsides.
 
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