atom feed9 messages in net.sourceforge.lists.courier-usersRe: [courier-users] Courier-MTA react...
FromSent OnAttachments
Robert PenzAug 18, 2009 11:34 am 
Sam VarshavchikAug 18, 2009 4:29 pm 
Robert PenzAug 19, 2009 12:58 am 
Sam VarshavchikAug 19, 2009 4:02 am 
Robert PenzAug 19, 2009 8:08 am 
Aidas KasparasAug 19, 2009 11:05 am 
Malcolm WeirAug 19, 2009 12:15 pm 
Sam VarshavchikAug 19, 2009 2:59 pm 
Alessandro VeselyAug 20, 2009 9:45 pm 
Subject:Re: [courier-users] Courier-MTA reacts badly if own DNS server goes down
From:Robert Penz (rob@penz.name)
Date:Aug 19, 2009 8:08:32 am
List:net.sourceforge.lists.courier-users

On Wed, 19 Aug 2009 07:02:45 -0400, Sam Varshavchik <mrs@courier-mta.com> wrote:

Well, you have to turn off everything that uses DNS, in the esmtpd configuration file. Adding -nodnslookup to TCPDOPTS. Removing the BOFHCHECKDNS option. Also turning off all spf settings in the courier configuration file.

So, you can't do sender's domain verification. You can't do SPF lookups. Such is the price you'll pay for not using DNS.

I think you misunderstand me. dns using is ok, but it should use also hosts entries for A and PTR records, specially for its own hostname. To be specific I don't care about anything else accept its own hostname. Why does every Linux system have a /etc/hosts? because of the entry for loopback and its own hostname. If you use "ping" or any other program it checks the hosts file before it does a dns query.

-- Regards, Robert

----- Robert Penz

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