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tommedema
Joined: 03 Nov 2010
Posts: 23
Location: 55
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| Posted: Sat Dec 25, 2010 7:55 pm Post subject: DNS: Creating external "e-mail aliases" |
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It is possible to delegate a subdomain to external nameservers (if this subdomain is setup on the server corresponding to the set nameservers), according to http://zytrax.com/books/dns/ch9/delegate.html.
I am wondering whether the same is achieveable with e-mail.
So, is it possible to add DNS entries so that any e-mail send to a subdomain will delegate to the "e-mail server" of an external server, without needing my server to actually process the data?
If so it would be possible to create a service where people can register their own e-mail aliases.
Thanks in advance. |
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pclissold
Joined: 24 Oct 2003
Posts: 877
Location: Netherlands
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| Posted: Sun Dec 26, 2010 4:14 am Post subject: Re: DNS: Creating external "e-mail aliases" |
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tommedema wrote: So, is it possible to add DNS entries so that any e-mail send to a subdomain will delegate to the "e-mail server" of an external server, without needing my server to actually process the data?
Yes. The example on the zytrax site does just that:
Code: ; zone fragment for sub-domain us.example.com
…
; sub-domain mail server
IN MX 10 mail.us.example.com. |
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Stever
Joined: 07 Dec 2007
Posts: 337
Location: NC, USA
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| Posted: Sun Dec 26, 2010 11:24 am Post subject: |
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It may or may not be obvious, but if you have delegated a subdomain to someone else's DNS servers, then THEY will be the ones who can set the MX for that subdomain, not you.
If you haven't delegated the subdomain, then a simple MX entry for the subdomain should do what I think you are wanting. |
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