Proper DNS records for handling subdomains and missing subdomains
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Cerin
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Published on 2012-05-31T21:27:24Z
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2012/05/31
22:43 UTC
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dns
|nameserver
I'm trying to craft DNS records to support:
- Explicitly defined subdomains, e.g.
ftp.mydomain.com - A missing subdomain that redirects to www.
- Implicitly defined subdomains, e.g.
<some user entered value>.mydomain.com
For 1, I'm using CNAME records. All seems to be working well.
For 2, I'm using an A record, @ -> 123.456.789.012. Worked well.
For 3, I ran into some trouble. I tried adding another A record, * -> 123.456.789.012. This appeared to work initially, but it broke #2. i.e. now browsing to mydomain.com doesn't redirect to www.mydomain.com.
I tried adding the CNAME record @ -> 123.456.789.012, but my DNS admin tool won't accept it because it's saying the @ is already in use, even though I deleted the A record using it.
Am I configuring this incorrectly? What am I doing wrong?
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