Re: [courier-users] Re: Automatically use secondary MX host if primary

Ben Kennedy wrote:

>Rodrigo Severo wrote at 7:12 pm (-0300) on 20 6 2005:
>
>
>
>>>Why should Courier contact a secondary MX if it was perfectly able to
>>>reach the primary?
>>>
>>>
>>Two possible reasons that came to my mind right now are: a 4xx error and
>>a "Connection time out" => "deferred" situation.
>>
>>
>
>There is a fault in your logic here. If there is a "connection time
>out", then clearly it was not "perfectly able to reach the primary".
>Therefore, in this case, the secondary MX would be tested (presumably).
>
>
I agree that in such a situation the secondary MX should be tested. I
see that you believe Courier does it but I'm afraid Courier doesn't in
this specific situation.

Could you clarify this issue Sam?

>
>
>>You couldn't be more right. My problem is that I have, by contract, to
>>send several emails to this client and my messages aren't getting
>>through because of the problems on their MX.
>>
>>
>
>So set up esmtproutes. If the first MX is unreliable, hard-code the
>second MX instead.
>
>
If one of the servers is always busy and the other always free this
would be a good enough solution. The problem is that sometimes both
servers change wholes.

>
>
>>As I said, I believe that trying subsequent MXs on 4xx errors and
>>"Connection time out" would be more constructive. I can't see a problem
>>here. Do you?
>>
>>
>
>What is this "connection time out" you keep alluding to;
>
The "connection time out" I keep alluding to is the error Courier logs
when it contacts another server trying to send a message and during the
smtp conversation Courier's timeout is exceded waiting for some answer.

>are we talking
>about the same thing?
>
>
I think so but I'm not sure. What do you think?


Rodrigo Severo





-------------------------------------------------------
SF.Net email is sponsored by: Discover Easy Linux Migration Strategies
from IBM. Find simple to follow Roadmaps, straightforward articles,
informative Webcasts and more! Get everything you need to get up to
speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click
_______________________________________________
courier-users mailing list
courier-users@lists.sourceforge.net
Unsubscribe: https://lists.sourceforge.net/lists/.../courier-users