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maxreefer

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One of our customers asks us to set a "mail backup":
He's got his own mail server but he doesn't trust it so he wants us to set our Kerio to "catch-all" in case of failure of his mailserver.
So i've created a new Domain and user in KMS and setted under Aliases a *(catch-all) user so that no matter the username KMS accept the mail for the specific domain.
Of course i've changed the world dns records for that domain:
10 mail.domain.com (the real one)
20 mail.KMS.com (KMS address)
Everything is ok except when i send mails to that domain using Kerio webmail cause the mail is delivered to kerio instead of real mailserver.
I don't know if the question is understandable ... any suggestion?
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Pavel Dobry (Kerio)

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I assume both email servers have same email domain. So when you are sending email to this domain, it is delivered locally and not via MX record. It is not possible to forward emails for some users within same domain to another server.

The solution is to set backup mailerver to forward all emails for this domain to primary mailserver (or using ETRN) and do not use catch-all account in this scenario.
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maxreefer

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Kerio_pdobry wrote on Wed, 19 April 2006 17:00

I assume both email servers have same email domain. So when you are sending email to this domain, it is delivered locally and not via MX record. It is not possible to forward emails for some users within same domain to another server.

So i guess KMS looks into his database/dns to find the specific domain ... this is not clear for me .. what if not found? what if i set in KMS a domain like microsoft.com, will kerio deliver all massages for microsoft.com into his internal folder instead of looking inside dns table and delivering it correctly?

Quote:

The solution is to set backup mailserver to forward all emails for this domain to primary mailserver (or using ETRN) and do not use catch-all account in this scenario.

actually i don't need a backup mailserver, i need a substitute in case of external primary server failure. I'm not going to recreate the structure (domain-->mail1,mail2,etc) but just save everything during primary server failure and then just give all the mails (as they are) to my customer.
thanx
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sonofcolin

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actually i don't need a backup mailserver, i need a substitute in case of external primary server failure. I'm not going to recreate the structure (domain-->mail1,mail2,etc) but just save everything during primary server failure and then just give all the mails (as they are) to my customer.
thanx


That's what a backup mailserver does and works exactly as Kerio_pdobry described.
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maxreefer

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ok let's proceed with order:
what KMS does when i send a mail? where does it look for dns?inside or outside?
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