mxtoolbox blacklist | Email Check
mxtoolbox blacklist | Email Blacklist Check - See if your server is blacklisted - MxToolbox
ABOUT BLACKLIST CHECK
The blacklist test will check a mail server IP address against over 100 DNS based email blacklists. (Commonly called Realtime blacklist, DNSBL or RBL). If your mail server has been blacklisted, some email you send may not be delivered. Email blacklists are a common way of reducing spam. If you don't know your mail server's address, start with a MX Lookup. Or, just send an email to ping@tools.mxtoolbox.com
ABOUT THE SUPERTOOL!
All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool. Input a domain name or IP Address or Host Name. Links in the results will guide you to other relevant tools and information. And you'll have a chronological history of your results.
If you already know exactly what you want, you can force a particular test or lookup. Try some of these examples:
(e.g. "blacklist: 127.0.0.2" will do a blacklist lookup)
If you already know exactly what you want, you can force a particular test or lookup. Try some of these examples:
(e.g. "blacklist: 127.0.0.2" will do a blacklist lookup)
| Command | Explanation | |
| blacklist: | Check IP or host for reputation | |
| smtp: | Test mail server SMTP (port 25) | |
| mx: | DNS MX records for domain | |
| a: | DNS A record IP address for host name | |
| spf: | Check SPF records on a domain | |
| txt: | Check TXT records on a domain | |
| ptr: | DNS PTR record for host name | |
| cname: | DNS canonical host name to IP address | |
| scan: | Perform a port scan on the host | |
| whois: | Get domain registration information | |
| arin: | Get IP address block information | |
| soa: | Get Start of Authority record for a domain | |
| tcp: | Verify an IP Address allows tcp connections | |
| http: | Verify a URL allows http connections | |
| https: | Verify a URL allows secure http connections | |
| ping: | Perform a standard ICMP ping | |
| trace: | Perform a standard ICMP trace route | |
| dns: | Check your DNS Servers for possible problems New! |
