Technical Support

Server Settings

These are the setting that you need to use for your MX record. Use exactly these setting and do not add any additional servers because spammer will use it to bypass this filter and you will end up getting spammed.

dummy0.junkemailfilter.com - 10
mx.junkemailfilter.com - 20
mx.junkemailfilter.net - 30
mx.junkemailfilter.org - 40
dummy1.junkemailfilter.com - 50

If you don't understand MX records you might need to ask your Internet Service Provider for help. The people who currently host the email for your domain. Sometimes they have to make the change for you or there might be a control panel they provide so you can do it yourself.

The numbers set the priority order with the lowest number getting first prority. It is very important that you get the order correct. If your system only allows you to enter 2 MX entries, ship the .org.

The rules for email delivery is that the sending server is supposed to try the lowest MX record first. If it fails it then tries the next highest record, and so on. If they all fail then the sending server will wait for a period of time and try them all again.

The mx.junkemailfilter.com servers are the primary filter group. The mx.junkemailfilter.net servers and the secondary and overflow group. The mx.junkemailfilter.org servers is just a spammer decoy group that always returns a temp error to foil spammers trying to get in the bac door.

For Experts:

If you are editing the DNS zone files directly using Bind - the zone files might look like this:

@       IN      MX      10      dummy0.junkemailfilter.com.
@       IN      MX      20      mx.junkemailfilter.com.
@       IN      MX      30      mx.junkemailfilter.net.
@       IN      MX      40      mx.junkemailfilter.org.
@       IN      MX      50      dummy1.junkemailfilter.com.

Note: it is very important that if you are editing the files directly - you need to have the final period (".") after the MX domain.

The right way:
mx.junkemailfilter.com.

The wrong way:
mx.junkemailfilter.com

Be sure to look at the results and see that it looks right. if it doesn't change your setting right away so that you don't loose any email. If you forget the final period "." you might get a result like:

mx.junkemailfilter.com.mydomain.com.

Also - it is important that you DO NOT add your existing MX recored to the list. Some people thing they should put their own MX as the highest MX record in case all my servers are down. But spammers often spam the highest MX record first and that bypasses the filter. The world should not know where your real mail server is.

If you are having your ISP make the changes for you - just send them a link to this web page and they will know exactly what to do. feel free to have your ISP or hosting company call us if they have any questions. Be sure to visit our FAQ page for additional answers.

Checking your Changes

Checking your changes is easy. Just go to DNS Report and type in your domain and it will check to see if your domain is set up correctly. Or - type your domain in here:

Why do we use 3 separate domains for MX resolution?

Some of you might be wondering why we use 3 different domains for MX resolution. We used to just define 3 servers on the same domain. But the problem with that is if a registrar makes a mistake and blocks the domain that resolves the MX records then everyone that we filter for would all lose their email. Having actually seen this happen to someone else we decided that our DNS strategy has to be to err on the side of paranoia. So it might look like overkill, but once you actually see hundreds of domains go down because a registrar (Godaddy.com) suspended the domain of a data center, you get a different perspective on this.