mxtoolbox blacklist | Email Check

    mxtoolbox blacklist | Email Blacklist Check - See if your server is blacklisted - MxToolbox


    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


    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:" 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!

    mxtoolbox blacklist | Email Check

    Reviewed by Unknown on Tuesday, March 27, 2012 Rating: 5

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