Confused about lower priority MX records
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From: Tyler Smart on 15 Feb 2010 11:48 Hi guys, I am confused about lower priority MX records. If I have a backup at prioirty 100, and a mailserver at priority 0, how do I check the backup account for email, or use it for email? How do I check the lower priority for email? Can I set the level 0 to check the lower one every hour? Sincerely, Tyler
From: Loki Harfagr on 16 Feb 2010 02:40 Mon, 15 Feb 2010 08:48:48 -0800, Tyler Smart did cat : > Hi guys, > > I am confused about lower priority MX records. If I have a backup at > prioirty 100, and a mailserver at priority 0, how do I check the backup > account for email, for a quick and easy instant check pull the plug off the mailserver (or add an iptables temporary blockade) > or use it for email? change the priority from 100 to 0 > How do I check the lower > priority for email? Can I set the level 0 to check the lower one every > hour? What/why every hour? This is not clear, if litteraly taken just write a cron script that'd add an iptables blockade on the main server every hour for one minute long, but that may not be what you wanted to ask ?-) Alternatively if you have a sending test server change its mailertable to read: test.back.domain [backupIP]:[mainIP] and test with e.g. `date|sendmail -v -Am postmaster(a)test.back.domain` If the question was elsewhat please be descriptive ;-)
From: ska on 17 Feb 2010 05:34 Tyler Smart wrote: > Hi guys, > > I am confused about lower priority MX records. If I have a backup at > prioirty 100, and a mailserver at priority 0, how do I check the > backup account for email, or use it for email? How do I check the > lower priority for email? Can I set the level 0 to check the lower one > every hour? Er, I guess you misunderstand the duty of Backup MX: http://en.wikipedia.org/wiki/MX_record#The_backup_MX there is no "backup account for email". -ska
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