[CentOS] off topic question plss need ur help

fabian dacunha fabian at baladia.gov.kw
Mon Jul 14 20:45:39 UTC 2008

Dear All,

I have been using centos 5.1 for quite some time as out DNS and mail server
and been workin fine

i use sendmail as my mail server

i did setup a backup mail server as per docs and ran th dns test from

and it says both the mail servers are fine

but i would like to know the following

how would i really know if my main primary server is down all my mails r
goin to my secondary mail server

and when my primary is up are the mails copied back to my primary

i did put down my mail server for abt 3 hrs cause cant keep it down for
long but did not really see anything

also are there any websites that can chec both my mail servers correctly

apprecite and thnaks

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