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VWAdministrator

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We need to change our primary domain but keep access to emails in our current domain.

I've read through some posts and think I get the idea that if we rename our current domain to the new one the current domain will become an alias of the new domain.

To test how this works in practice I've created a few alias domain within our current domain but cannot seem to find where I might be able to access emails that might sent to these alias addresses.

Or does email sent to an alias appear within the users primary mailbox automatically. Then when replying to an alias it has a reply address of the primary domain?

Something like:
Primary domain:- <_at_>Domain1.com
alias domain:- <_at_>Domain2.co.uk

Wmail sent to joe@Domain2.co.uk would appear in mailbox joe<_at_>Domain1.com,
when replying the return to address would be joe<_at_>Domain1.com

Any clarification would be much appreciated before I implement the changes.

Thank you
Ian
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Vicky

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Hi Ian,

When you rename a domain all the users will automatically get the email address of <_at_>domain1.com and they will also be able to receive email that comes to their username<_at_>domain2.co.uk (which is the domain alias).

All email coming into them, regardless of which email address the email comes in on will arrive in their Inbox of their email account on the primary domain.

When replying by default Kerio will use the primary email address as the sending address but if the user wants to be able to use another address then they will need to configure their email client to do this.

I hope this helps a bit,
Vicky
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VWAdministrator

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Thanks for the reply Vicky.

I took the first steps in implementing the change on Friday but have a problem which I'll try to explain.

We have recently become three sites in the UK plus three sites in Europe, each site has it's own (different) local email server but will be using the same Domain name (domain2.com). Email sent to this domain are going to an Exchange Server setup in a data centre. This Exchange Server is then doing an LDAP look up across the sites to discover the location of the recipient.

I've not yet changed our primary Domain to domain1.com but added it as an alias to our current domain of domain2.co.uk. This was to prove the LDAP look up to our site and we could receive email (using domain1.com) into the correct recipients mailbox. This set up works fine for incoming emails to both domains.

The problem I have is: if I leave the outgoing SMTP connection via Proofpoint (our current route) I can send emails to the new domain (domain1.com). BUT central IT want me to send emails back to the central Exchange Server.

So... I set up the route using 'If recipient was not found in this domain, forward the message to another host' and entering the ip address of the host. When this is configured any emails sent to domain1.com do not leave our Kerio Email server they end up in my catchall mailbox.

I also changed the SMTP Delivery to 'Deliver directly using DNS MX records' so that any emails would not go out via Proofpoint, but this has had no effect.

To be on the safe side I have installed the latest update over the weekend 8.4.1 (3789)...

Hope the above is clearer than mud...

Any help would be appreciated.
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clan

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I would guess that this:

Quote:
I set up the route using 'If recipient was not found in this domain, forward the message to another host' and entering the ip address of the host.

will have no effect if all mail for non-local users ends up in a catchall mailbox.
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VWAdministrator

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I think your correct that the forwarding to another host is not having any effect. But why is something I'm trying to discover, I must be missing something somewhere within the settings.

I don't want to change our primary domain if this rule is having no effect while the new domain name is an alias of our current domain.
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VWAdministrator

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Just noticed a typo in my previous decriptionVWAdministrator wrote on Sun, 15 February 2015 22:45


We have recently become three sites in the UK plus three sites in Europe, each site has it's own (different) local email server but will be using the same Domain name (domain2.com). Email sent to this domain are going to an Exchange Server setup in a data centre. This Exchange Server is then doing an LDAP look up across the sites to discover the location of the recipient.



To make more sense of the description (domain2.com) should be (domain1.com).

Please forgive me... it was late on Sunday night when I posted the entry...
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clan

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Maybe I should have phrased my answer differently: if you have a catchall mailbox on your server there is always a local user, so there is nothing to forward. Disabling the catchall should help.
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VWAdministrator

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Many thanks for the clarification and disabling the Catchall account fixes the problem

I was assuming the Catchall came into effect after the forwarding rule but thinking about it of course it can't as how would our mail server know if the recipient does not exist on the other servers. The catchall has to be on the Central mail Server...

I feel a bit of an idiot not thinking that one through correctly.

Thanks again for your help.
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VWAdministrator

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Sorry for being a bit of a wet lettuce with this change of Domain name but central IT want me to run a full test before going live next week.

They want me to change the domain name to the new domain run a few emails through to different Servers. Then if all is well change back to our old address until the official switch over day.

I understand that when I change the domain name our current domain becomes an alias of the new domain. To change back I will have to delete the alias of our current domain before reverting to our current setup. Then on the official switch over day change our domain name again.

Will this multiple change of domain name have any effect on the mail stored in our current domain?

Thank you in anticipation.
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