[Leaplist] Yahoo makes hay about my mail server

[Jason Boxman]

Can anyone confirm I've configured this correctly?

> 2. The results of a DNS & RDNS query for the mail server with delivery
> issues showing that you are resolving IP and domain name correctly.  
> Your mail server IP reverse DNS should reflect your domain in the name.
>
> Please review the following link for assistance in correct configuration
> of SMTP and DNS:
>
>    http://www.saas.nsw.edu.au/solutions/dns.html
>
> The server should have a fully qualified hostname (FQDN).  The hostname
> should resolve to an A record. (DNS) The IP address should resolve to
> the server domain name.(RDNS)  The MX record for the domain for which
> you wish to receive mail should point to the domain name of your
> dedicated mail server.  There should be a PTR record for the IP address
> of your server.

The From: is jason at mboxmaninsurance.com.  (Message takes the same path as 
jasonb at edseek.com in this message's headers, actually.)

The mail server, web.gohideaway.com, is: 208.75.86.204

(It's the mail server because I'm cheap.)

It gives a EHLO of web.gohideaway.com

But my understanding is that ought to be okay, as long as SPF is properly 
configured to allow for it, which it is:

mboxmaninsurance.com.   3600    IN      TXT     "v=spf1 mx ~all"

web:~# host 208.75.86.204
Name: web.gohideaway.com
Address: 208.75.86.204

Reverse DNS works.

web:~# dig mboxmaninsurance.com mx

; <<>> DiG 9.3.4-P1.1 <<>> mboxmaninsurance.com mx
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26683
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ADDITIONAL: 5

;; QUESTION SECTION:
;mboxmaninsurance.com.          IN      MX

;; ANSWER SECTION:
mboxmaninsurance.com.   86400   IN      MX      10 mail.gohideaway.com.

;; AUTHORITY SECTION:
mboxmaninsurance.com.   259116  IN      NS      ns2.everydns.net.
mboxmaninsurance.com.   259116  IN      NS      ns3.everydns.net.
mboxmaninsurance.com.   259116  IN      NS      ns4.everydns.net.
mboxmaninsurance.com.   259116  IN      NS      ns.mboxmaninsurance.com.
mboxmaninsurance.com.   259116  IN      NS      ns1.everydns.net.

;; ADDITIONAL SECTION:
ns.mboxmaninsurance.com. 259116 IN      A       208.75.86.204
ns1.everydns.net.       29230   IN      A       208.76.56.56
ns2.everydns.net.       118675  IN      A       204.152.184.150
ns3.everydns.net.       716     IN      A       89.188.0.57
ns4.everydns.net.       183     IN      A       208.96.6.134

;; Query time: 16 msec
;; SERVER: 208.75.87.250#53(208.75.87.250)
;; WHEN: Tue Oct  7 20:16:58 2008
;; MSG SIZE  rcvd: 251

Oops, ns.mboxmaninsurance.com. is supposed to be stealth.  Didn't quite figure 
that part out with tinydns yet.

What's more, I configured DKIM, too, which is verified working.  (Or see this 
message's header.)

dkim._domainkey.mboxmaninsurance.com. 86400 IN TXT "k=rsa\; 
p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDhu1Uc/QWbuT
NmVYtdCv2L50mnx6Pbi1t0G6CgYDnLDVw7yegrHi+UkbqHFtqrwSrPS
47n5hpTSiZEbLiEK7vh4TJq7Hj9V0mfkCGfwTosep6Y9GKYM9KZqgDjkc
YoKg9MvKNrIXBYEn5MHWhJZpOWZk/B0fOjmgmAxco3QJ2zDQIDAQAB"
(obviously not broken up with CR in DNS itself.)

So, what now?

Do I need to buy another IP so my EHLO is the same as the From: and the rDNS 
of the origination IP of the SMTP session?  Or wtf?

Really, I despise Yahoo.

As a laugh, they sent me this ancient, non-Yahoo document on configuring my 
DNS:

http://www.saas.nsw.edu.au/solutions/dns.html

A lot of the links, like the one for dnsstuff.com which is now commerical, 
haven't even been updated.  Lovely choice, Yahoo.

(intodns.com ftw, btw.)


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