whaaah Posted November 21, 2008 Share Posted November 21, 2008 I was needing someone to explain MX Record Priority and the role of reverse DNS lookup records in regard to email hosting - Do I need to register a reverse lookup for my IP's, what if my ISP wont allow me to do this, what are my options? MX Record (0 priority) MX Record (10 priority) MX Record (20 priority) Thanks for your help! Quote Link to comment Share on other sites More sharing options...
TCH-Bruce Posted November 21, 2008 Share Posted November 21, 2008 Welcome to the forums whaaah While most domains have just one "MX" record, some domains can have multiple MX records. The MX records might then be: example.com. MX priority=5 example-com.relay1a.spamh.com. example.com. MX priority=6 example-com.relay1b.spamh.com. example.com. MX priority=10 mail1.bighost.net. example.com. MX priority=20 example-com.relay1c.spamh.com. When a mail server sends email to your domain, it first attempts to send it according to the MX record with the highest (lowest numerically) priority. If the two servers fail to establish a connection, the sending mail server tries the next highest priority MX record, until it goes through all of the MX records. Quote Link to comment Share on other sites More sharing options...
whaaah Posted November 21, 2008 Author Share Posted November 21, 2008 Thanks for the info! Welcome to the forums whaaah While most domains have just one "MX" record, some domains can have multiple MX records. The MX records might then be: example.com. MX priority=5 example-com.relay1a.spamh.com. example.com. MX priority=6 example-com.relay1b.spamh.com. example.com. MX priority=10 mail1.bighost.net. example.com. MX priority=20 example-com.relay1c.spamh.com. When a mail server sends email to your domain, it first attempts to send it according to the MX record with the highest (lowest numerically) priority. If the two servers fail to establish a connection, the sending mail server tries the next highest priority MX record, until it goes through all of the MX records. Quote Link to comment Share on other sites More sharing options...
TCH-Thomas Posted December 8, 2008 Share Posted December 8, 2008 Welcome to the forum, whaaah. Quote Link to comment Share on other sites More sharing options...
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