intoDNS VS BlacklistAlert

You can check the DNS with whatismydns.net and intodns.com. Source: about 1 year ago

Feel free to check https://intodns.com/ and https://www.whatsmydns.net/ to monitor propagation and ensure the DNS records are correctly set. Source: about 1 year ago

Just in case, it would be a good idea to check the DNS with a tool like intodns.com, just to make sure everything is working as intended. Source: about 1 year ago

I know this is a little old but I came across some of my tools I used when going through bookmarks: - https://mail-tester.com Although I already mentioned this above, this has been a lifesaver when it comes to figuring out why 3rd parties are rejecting your mail - https://intodns.com Helps give you a more thorough view into how your DNS settings are configured. - https://mailu.io Not a diagnostic tool, but a... Source: over 1 year ago

If you need external confirmation of things, intodns.com and dnschecker.org are both pretty good. Source: over 1 year ago

Have a look on blacklistalert.org and senderbase.org to check your IP reputation and make sure you're not listed on any blacklists. Source: over 1 year ago

I misstyped: it's blacklistalert.org that produced the DNS mismatch. Source: almost 2 years ago

Checking with https://blacklistalert.org/ there's a website which is blacklisting joinmobilizon.org http://www.justspam.org/check-an-ip?ip=66.111.4.71. - Source: Hacker News / over 2 years ago