> What inherent trust are you referring to? Primary, secondary, tertiary
> MXs do not have to have any knowledge of each other, just different
> metrics in DNS. Do you mean they trust each other because they are on
> the same subnet?
Exactly, they are both on the same subnet, and anyone on that subnet is
allowed to relay through either machine.
> Generally speaking, since the two MXs have no by-definition
> relationship, are you doing something more complex to bring them
> together?
True. I'm not doing anything special.
> Do they both actually receive mail for the domain?
Yes, the secondary has an entry in its hosts file, the primary has the
actual user accounts.
Unfortunately I'm not able to easily perform regression testing (since
I'd have to roll both servers back to version 6).
> Also, what about the SMTP log at the moment of relay?
Here is the initial receipt of my relay test by the backup server:
09:18 16:04 SMTPD(001200A4) [10.10.10.1] connect 192.168.254.254 port
35227
09:18 16:04 SMTPD(001200A4) [192.168.254.254] ehlo me
09:18 16:04 SMTPD(001200A4) [192.168.254.254] mail
from:<[EMAIL PROTECTED]>
09:18 16:04 SMTPD(001200A4) [192.168.254.254] rcpt
to:<[EMAIL PROTECTED]>
09:18 16:04 SMTPD(001200A4) [192.168.254.254]
X:\path\to\spool\Dc4fb0a4.SMD 270
Here the backup hands it off to the primary:
09:18 16:04 SMTPD(00C50106) [10.10.10.2] connect 10.10.10.1 port 1085
09:18 16:04 SMTPD(00C50106) [10.10.10.1] EHLO mail.munged.com
09:18 16:04 SMTPD(00C50106) [10.10.10.1] MAIL
FROM:<[EMAIL PROTECTED]>
09:18 16:04 SMTPD(00C50106) [10.10.10.1] RCPT
To:<[EMAIL PROTECTED]>
09:18 16:04 SMTPD(00C50106) [10.10.10.1] X:\path\to\spool\Dc4d4106.SMD
465
And here the primary performs final delivery:
09:18 16:04 SMTP-(00000097) Trying external.com (0)
09:18 16:04 SMTP-(00000097) Connect external.com [192.168.1.1:25] (1)
09:18 16:04 SMTP-(00000097) 220 mail.external.com ESMTP Sendmail
8.9.3/8.9.3/12202000-01; Tue, 18 Sep 2001 16:04:05 -0600 (MDT)
09:18 16:04 SMTP-(00000097) >EHLO smtp.munged.com
09:18 16:04 SMTP-(00000097) 250-mail.external.com Hello smtp.munged.com
[10.10.10.2], pleased to meet you
09:18 16:04 SMTP-(00000097) 250-EXPN
09:18 16:04 SMTP-(00000097) 250-VERB
09:18 16:04 SMTP-(00000097) 250-8BITMIME
09:18 16:04 SMTP-(00000097) 250-SIZE 10000000
09:18 16:04 SMTP-(00000097) 250-DSN
09:18 16:04 SMTP-(00000097) 250-ONEX
09:18 16:04 SMTP-(00000097) 250-ETRN
09:18 16:04 SMTP-(00000097) 250-XUSR
09:18 16:04 SMTP-(00000097) 250 HELP
09:18 16:04 SMTP-(00000097) >MAIL FROM:<[EMAIL PROTECTED]>
09:18 16:04 SMTP-(00000097) 250 <[EMAIL PROTECTED]>... Sender
ok
09:18 16:04 SMTP-(00000097) >RCPT To:<[EMAIL PROTECTED]>
09:18 16:04 SMTP-(00000097) 250 <[EMAIL PROTECTED]>... Recipient ok
09:18 16:04 SMTP-(00000097) >DATA
09:18 16:04 SMTP-(00000097) 354 Enter mail, end with "." on a line by
itself
09:18 16:04 SMTP-(00000097) >.
09:18 16:04 SMTP-(00000097) 250 QAA04592 Message accepted for delivery
09:18 16:04 SMTP-(00000097) rdeliver nilenet.com [EMAIL PROTECTED] (1)
<[EMAIL PROTECTED]> 465
09:18 16:04 SMTP-(00000097) >QUIT
09:18 16:04 SMTP-(00000097) 221 mail.external.com closing connection
09:18 16:04 SMTP-(00000097) finished X:\path\to\spool\Qc4d4106.SMD
status=1
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