required MX and A records?
Joseph S D Yao
jsdy at cospo.osis.gov
Thu Sep 16 20:02:07 UTC 1999
> I have a private net, and want sendmail to:
> - immediately deliver emails addressed to someuser at privatenet.com
> - relay emails addressed to any other domain to my ISP's mailserver
>
> sendmail and named run on the same host, called dns_host.
>
> I'm not sure what the MX record(s) should look like. Here's my guess:
> dns_host.privatenet.com. IN A 192.168.0.2
> privatenet.com. IN MX 10 dns_host.privatenet.com.
> mail.myISP.com. IN A xxx.xxx.xxx.xxx
> IN MX 10 myISP.com.
>
> Q1. Do I need to place the last two records in a separate zone?
The last two records should be in the bit bucket. ;-) They will be
rejected by BIND 8.*, anyway. The mail "relay" should be specified in
the sendmail.cf file. Your DNS should be concerned with YOUR zone,
only.
> Q2. Is the last record one of those 'wildcards' I've seen advised
> against? If so, what's a better solution?
No. Wildcards contain "*". See above.
> Q3. Can you tell me what else I'm missing?
DNS and BIND, by Albitz & Liu? ;-)
Sendmail, by Fred Avolio? ;-)
--
Joe Yao jsdy at cospo.osis.gov - Joseph S. D. Yao
COSPO/OSIS Computer Support EMT-B
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