[TriLUG] e-mail configuration question

[Mike Johnson]

Jon Carnes [jonc at nc.rr.com] wrote:
 
> BTW: isn't it rather bad form to have all the servers have the same
> preference.  I thought this form of "load balancing" did not really work.

Sure it does.  Most resolvers will pick the first in the list.  So:

[mikej at linux-mikej mikej]$ host -t mx vtcdev.gc.lucent.com
vtcdev.gc.lucent.com. mail is handled by 10 ihemail2.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 auemail2.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 hoemail1.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 ihemail1.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 auemail1.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 hoemail2.lucent.com.
[mikej at linux-mikej mikej]$ host -t mx vtcdev.gc.lucent.com
vtcdev.gc.lucent.com. mail is handled by 10 ihemail2.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 auemail2.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 hoemail1.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 ihemail1.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 auemail1.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 hoemail2.lucent.com.
[mikej at linux-mikej mikej]$ host -t mx vtcdev.gc.lucent.com
vtcdev.gc.lucent.com. mail is handled by 10 ihemail2.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 auemail2.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 hoemail1.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 ihemail1.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 auemail1.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 hoemail2.lucent.com.
[mikej at linux-mikej mikej]$ host -t mx vtcdev.gc.lucent.com
vtcdev.gc.lucent.com. mail is handled by 10 ihemail1.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 auemail1.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 hoemail2.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 ihemail2.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 auemail2.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 hoemail1.lucent.com.
[mikej at linux-mikej mikej]$ host -t mx vtcdev.gc.lucent.com
vtcdev.gc.lucent.com. mail is handled by 10 hoemail2.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 ihemail2.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 auemail2.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 hoemail1.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 ihemail1.lucent.com.
vtcdev.gc.lucent.com. mail is handled by 10 auemail1.lucent.com.

Notice how the first in the list changes.

Mike
-- 
"Yeah it is! Cause he's bakin' in the...kitchen of darkness!  A pie of
lost souls...until it's golden brown!" -- Moltar on Space Ghost

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