Postfix host verification under 2010.1...

Well, the hits just keep on a'coming since my update.  When I sent that
last message to the mailing list, I happened to look at my syslog tail
(which apparently is no longer syslog but something called rsyslog, but
that's a whole other story...) output, and noticed the following:

Oct 10 18:16:54 janet postfix/smtp[12565]: certificate verification
  failed for sub2.homie.mail.dreamhost.com[208.97.132.85]:587: untrusted
  issuer /C=US/ST=California/L=Los Angeles/O=New Dream Network,
  LLC/OU=Security/CN=New Dream Network Certificate
  Authority/[email protected]
Oct 10 18:16:54 janet postfix/smtp[12565]: 075F1200264A:
  to=<expert-4qZELD6FgxheH41UXmfQsti2O/[email protected]>,
  relay=sub2.homie.mail.dreamhost.com[208.97.132.85]:587, delay=0.9,
  delays=0.06/0.05/0.61/0.19, dsn=2.0.0, status=sent (250 2.0.0 Ok:
  queued as 7E10267006F)
Oct 10 18:16:54 janet postfix/qmgr[4210]: 075F1200264A: removed


(I did the indention and stuff here to make it more readable.)  Looks
like something else got changed along the way while doing my upgrade
from 2010.0 to 2010.1 - I never used to get that message when sending
mail....  To explain, since my Linux box is on a broadband connection,
and since a lot of places block that address space for mail-sending
purposes due to the rampant spam problem with hijacked systems in
broadband address space, and so on, I've got Postfix configured to use a
smart mail relay to do the sending.  I tried using my ISP's mail server,
but it sucks really big rocks through a really thin straw.  So, I'm
making use of the mail server on my web hosting provider.  It's nice and
encrypted so my password isn't being sent in the clear, works well, etc.

Fortunately, the warning message isn't resulting in it refusing the
sending of the message, but it's annoying nonetheless.  Anyone have any
ideas what I need to do in order to quiet that thing down? :-)

                 --Dave

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