The Domain Name System (DNS) is a hierarchical distributed naming system that contains mappings of DNS domain names to various types of data, such as IP addresses.
   This tool will list the DNS resource records for the most common types.

   A Mail eXchanger (MX) record specifies a mail server responsible for accepting incoming emails. Changing your MX records is often required during email migrations. To migrate your mailboxes, try MigrationWiz.
   This tool will list the MX records.

   A Pointer (PTR) record maps an IP address to a hostname.
   This tool will list the PTR records.

   Sender Policy Framework (SPF) allows domain owners to specify which hosts are allowed to send emails from a given domain. This email validation system aims at preventing legitimate domains to be classified as spam.
   This tool will list the SPF records.

   A Real-time Blackhole List (RBL) is a list of mail server IP addresses that are considered as spammers. To receive regular deliverability reports, try our tracking applet.
   This tool will test the mail server IP address against email blacklists.

   Simple Mail Transfer Protocol (SMTP) is a standard for email transmission across IP networks.
   This tool will test a SMTP mail server.

   This server type finder will try to find which email solution a domain name uses.

   This delivery tool will send an email from your email address to some popular email domains (e.g. gmail.com) to check if your emails are successfully delivered or classified as spam. Your credentials will not be saved and will only be used for this test.
   You can modify the email to check if a specific content is considered as spam.