ainError} (or subclasses) on other errors.

    @type name: C{str}
    @param name: DNS name to resolve.

    @type timeout: Sequence of C{int}
    @param timeout: Number of seconds after which to reissue the query.
    When the last timeout expires, the query is considered failed.

    @type effort: C{int}
    @param effort: How many times CNAME and NS records to follow while
    resolving this name.

    @rtype: C{Deferred}
    )