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Filtering Rejected Mail FAQ

You are here either because you have received a Delivery Status Notification (DSN) referencing this URL or you have noticed it in your mail server error logs. Please find the section most appropriate to you. Do not submit the form unless instructed to do so, as queries covered here are unlikely to receive a reponse.

I am a Demon customer



I am not a Demon customer




I am a Demon customer

I don't want you filtering my mail, how do I disable it?

You can disable or enable the Cloudmark Email filtering service at any time by logging into the WebPassword control panel:

https://www.password.uk.demon.net

I don't seem to be receiving Yahoo Groups mail anymore

If a mail is determined to be spam it will be rejected by our servers. We do not make any distinction as to where the mail comes from. Yahoo Groups may remove you from their mailing list if too much email that is sent to you is rejected, no matter what the reason. Yahoo's policy is not under our control. If you find that the Cloudmark Email filtering service isn't meeting your needs you can enable or disable it at any time by logging into the WebPassword control panel:

https://www.password.uk.demon.net

I am just trying to forward mail from work to my home address

The Cloudmark Email filtering service makes no such distinction. If the content of the mail you are forwarding triggers certain rules your mail will be rejected. You can try disabling the filter whilst you send your mail and enable it again once you have received it.

Please also note that the Cloudmark Email filtering service will not necessarily be able to spot the difference between spam received directly and spam that you may forward manually to your account.

I am just running my own mailing list

If you are running your own mailing list list and are finding that mail to some Demon users is being rejected as spam then you will probably want to contact Cloudmark directly and try to establish why they believe your mail to be spam.

I never sent this mail, why was it returned to me?

The most likely explanation is that spam was sent to one of our users, possibly you, and was then rejected by our servers. At this point, the server that attempted to send the spam returned a Delivery Status Notification (DSN) message to the address in the Return-path of the mail. In this instance that address was yours and hence why you have received the DSN. You can either delete the DSN or, if it includes the headers of the original mail, you can file a report with the originating ISP.

If you find that you are receiving a large number of these DSNs then you may wish to make use of our Discard DSN feature. When enabled this will silently discard any DSN including legitimate ones for mail you have sent. As such we only recommend that you enable this for a short period of time while you experience any problems.

You can enable or disable the Discard DSN feature at any time by logging into the WebPassword control panel:

https://www.password.uk.demon.net

Other people are mailing me but I am not receiving their emails

If they received a bounce message which gave them this URL for more information then they should refer to the "I am not a Demon customer" section. If you find that the Cloudmark Email filtering service isn't meeting your needs you can disable or enable it at any time by logging into the WebPassword control panel:

https://www.password.uk.demon.net

Why is this spam not getting caught by the filter?

Please read the Email Filtering FAQ for further information:

http://www.demon.net/helpdesk/technicallibrary/faq/email/#should


I am not a Demon customer

I am just running my own mailing list

If you are running your own mailing list list and are finding that mail to some Demon users is being rejected as spam then you will probably want to contact Cloudmark directly and try to establish why they believe your mail to be spam.

I never sent this mail, why was it returned to me?

The most likely explanation is that spam was sent to one of our users and was then rejected by our servers. At this point, the server that attempted to send us the spam returned a Delivery Status Notification (DSN) message to the address in the Return-path of the mail. In this instance that address was yours and hence why you have received the DSN. You can either delete the DSN or, if it includes the headers of the original mail, you can file a report with the originating ISP.

I was just replying to spam received from one of your customers

You will need to check whether the mail did in fact originate from one of our customers. Simply because the address in the From header appears to be one of our cusomers, it does not mean that the mail came from them, their address may have been forged.

Check the headers of the mail you received and file a report with the appropriate originating ISP (which may of course be us) ensuring that you include the full headers and message body.

I am trying to send a legitimate mail to one of your customers

The determination of whether an email is rejected as spam or not is down to Cloudmark's filters and we have no direct control over that. We recommend the following tips for improving the delivery of your mail:

  • Send your mail in plain text where possible
  • Do not put strings like 'Test' in the Subject line
  • Certain URLs are on a reject list. Where possible try removing links to products, particularly if it is merely for advertising
  • Try to trim down the content of your mail if it includes multiple previous mails; the problem may lie with content in one of those
  • Ensure that you present a fully qualified domain name in the HELO negotiation, e.g. 'foobar.example.com' not 'TIACH77'


If you still find that your mail is rejected please fill in the form below (ensuring that you provide as much detail as possible) and we will attempt to give you further assistance. Please note that this does not guarantee a resolution since we may refer you to Cloudmark directly for that.


Name:



Email Address:



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