Here's what I get when I 'dig' mail.vei.net, my mail server: jerry@linux:~> dig mail.vei.net ; <<>> DiG 8.3 <<>> mail.vei.net ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 3 ;; QUERY SECTION: ;; mail.vei.net, type = A, class = IN ;; ANSWER SECTION: mail.vei.net. 7m32s IN A 207.244.8.40 ;; AUTHORITY SECTION: vei.net. 13h6m53s IN NS NS3.vei.net. vei.net. 13h6m53s IN NS NS4.vei.net. vei.net. 13h6m53s IN NS NS2.vei.net. ;; ADDITIONAL SECTION: NS3.vei.net. 13h6m53s IN A 207.244.8.3 NS4.vei.net. 13h6m53s IN A 207.244.18.240 NS2.vei.net. 13h6m53s IN A 207.244.8.2 ;; Total query time: 205 msec ;; FROM: linux to SERVER: default -- 198.6.1.150 ;; WHEN: Sun Mar 24 19:41:45 2002 ;; MSG SIZE sent: 30 rcvd: 148 jerry@linux:~> What does it all mean? On Sun, 24 Mar 2002 22:16:21 -0500 George Auch <gwauch@auchnet.net> wrote:
On Sunday 24 March 2002 10:14 pm, you wrote:
If an ISP has "mail.ispxxx.com" for it's POP server, and "mail.isp.xxxx.com" for it's SMTP server, does that mean they only have ONE server for all mail, incoming and outgoing? That sounds a little dangerous to me; the cheap way out.
Use the 'dig' command on each to verify if the host resolves to the same ip address.
It's kind of doubtful that an ISP would only run one mail server.
More than likely the ip / host for the smtp server is a mail gateway, there could be multiple servers behind the gateway box.
-- George Auch SuSE Pro 7.3 Linux ns1 2.4.18 #1 Sat Mar 2 08:38:16 EST 2002 i686 unknown
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