MX Guarddog IP Address List
If you are controlling access to your server by IP Address, you will need to allow our delivery servers to connect from the following addresses. You can not select which datacenters will process your email, you must allow access from all addresses to guarantee your email can be delivered. We try and make as few changes to this list as possible... and will inform all postmasters via email of upcoming changes.
Active MX Guarddog IP Addresses
| 108.166.117.93 | Illinois, USA | Added Feb. 2012 |
| 174.129.28.137 | Virginia, USA | |
| 216.58.39.211 | Ottawa, Canada | Added Feb. 2012 |
| 222.229.219.209 | Tokyo, Japan | |
| 64.15.147.141 | Montreal, Canada | |
| 66.85.178.50 | Arizona, USA | Added Feb. 2013 |
Retired IP Addresses
Retired addresses are no longer being used, if you previously allowed access to any of these addresses you can now safely remove them.
- 184.107.58.155 - retired May 5, 2013
- 174.142.104.48 - retired January 15, 2013
- 66.11.177.147 - retired January 31, 2012
- 174.142.75.75 - retired July, 2011
- 175.41.130.44 - retired October 15, 2010
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Kick Spamassassin's Ass! Thank you for offering such a needed service, I love it!
Jakz
We have now deployed mxguarddog for five of our clients and use it on our own exchange server. Out of the box with no configuration it works brilliantly, the quarantine emails are great for the end user.
This system out performs many commercial spam filters we have sold in the past.
Allan Napier
Engaging IT
We are using MX Guarddog on a few different domains and love it. It has helped tremendously with keeping our time on useful tasks rather than sifting through SPAM.
It seems to just get better and better as well. I can’t say enough about how much we appreciate the service.
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