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Chris Coleman
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Spam Problem

Hi Spam Expert,

                           we have an SBS 2008 server, suddenly outgoing emails (not all) are going to the SPAM box of the recepient - IE.  www recipients out side of the domain  .

The only thing thats changed recently is the ISP (we do not use pop3), the isp provide us with broadband services and a static IP address .

Oh and we put the usual updates on the server - SPAM filters etc, but I think this would only effect incoming mail which is not a concern

Any ideas


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Chris Coleman

8/22/2022 - Mon
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Chris Coleman

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Thanks for the prompt response -

Our NEW static IP is -  212.159.16.105.

The specific email addresses are on their ways to me now, although because there are a few (I know of four)  I doubt that this will yield any results.

My client was sending out quotations which did not arrive, or at least went only to Spam Boxes, therefore were not read - So he's none too happy.
 

Many Thanks.
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Ian Pattison

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Ian Pattison

212.159.16.105 resolves to
"advancejoi3.pndsl.co.uk"
Top Level Domain: "co.uk"

Seems you reverse records are still replicating around.

However, just a though: are you using plunet's SmartHost to deliver your email for you?
If you are, their mail servers were blacklisted last week, and all sorts of mail delivery problems were apparent. If so, may I suggest you deliver your mail directly using DNS.
Chris Coleman

ASKER
Hi ,

        Mail is sent through our web server which has an MX record to the static IP of the ISP, who send that IP address to the SBS server. Obviously the IP is used for other things, VPN, OWA, etc, but we will be forced to change it if the problem is not resolved.

I have modified the reverse DNS, the fact that it was pointing at the wrong company is not good, obviously.

I will monitor the situation for a few days before closing the ticket.

Many Thanks - ChrisColeman.

Chris.
I started with Experts Exchange in 2004 and it's been a mainstay of my professional computing life since. It helped me launch a career as a programmer / Oracle data analyst
William Peck
Ian Pattison

Sorry, I was talking about your OUTBOUND mail delivery.

Make sure you are NOT using the plusnet SmartHost relay.plus.net as that currently has problems.

Your inbound mail has no effect on if your outbound mail is delivered or not.
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Chris Coleman

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Apologies for the delay - I have been waiting for the reverse DNS record to be fixed by Plusnet, but it looks like they're not going to change it - I shall ask again and maybe send them a link to experts-exchange?

Anyway the spam problem seems to have resolved it self, I am grateful for all of the responses to this question - It has been a bit of a learning curve.

Chris.