How to Find an Email Server's Name
Various websites offer web-based DNS lookup tools that can discover the email server name for any domain name. Server names are also referred to as Domain Names System, or DNS, names. An email server is also referred to as a Simple Mail Transfer Protocol, or SMTP, server. Tiered DNS database servers store all DNS server names that exist on the Internet, including SMTP servers. The MX record type stores SMTP server names in the DNS database. Use the DNS lookup tool to search for the MX record or email server of a given domain.
Open the web browser and go to zoneedit.com, iptools.com, dnstools.com or dnsbench.com.
Enter the domain name for the desired email-server name. In Zone Edit, enter it in the box labeled "Enter a host name for Forward DNS Lookup." If the email-server name for "isp.com" is required, type in "isp.com."
Select the "Mail Server (MX)" option from the drop-down list in box number 2, if you are using Zone Edit. This box is labeled "Select record type (optional)".
Click the "Look it up" button next to number 4, if you are using Zone Edit.
Note the server name under the "Value" heading in the "DNS Lookup Results" section if you are using Zone Edit. It will be in the format
Tips & Warnings
- Often there will be more than one MX record, or email server, for a domain name. Domain names with a large volume of email traffic usually have more than one email server.
- A server name can contain more than one DNS level. DNS levels are divided by periods. For example, an MX record of "b.mx.mail.isp.com" indicates an email server name of "b.mx.mail."
- Always use the fully qualified domain name when identifying an email server in software configuration settings or computer code. Unless the host computer is directly connected to the given domain's network, it will not be able to resolve just the email server's name. Both the server-name and domain-name portions will be required. Using the example of an email-server name of "smtp1" and a domain name of "isp.com," it is safer to address the server as "smtp1.isp.com" rather than just "smtp1."