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Why do SOA records use a '.' instead of an '@' for contact email addresses?

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up vote 3 down vote accepted

A line typically found in a BIND zone file might look something like this:

@ IN SOA ns1.mydomain.com. administrator.mydomain.com. (

Alowing @ in the email address would make parsing unnecessarily difficult and error prone.

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Because the @ is not a valid character for use in DNS names.

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