SBS 2003 R2: Changing the public IP address - a checklist?

We are changing the static IP of our network tonight.  I want to make sure I have all the bases covered.  

I'll change the public IP in the hardware firewall
Change the MX, a, etc., spf records in the DNS hosted by godaddy.
Rerun CEICW? on the SBS box?

Is there anything that we should have with the ISP for reverse DNS (they have to set up reverse DNS, right?) for mail to be sent from our exchange server reliably?

thanks!
babaganooshAsked:
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SysExpertCommented:
Well when you change the MX and DNS that should happen automatically, but remember that it can take 2 - 24 hours to propagate.

 
I hope this helps !
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babaganooshAuthor Commented:
but for all the things related to email these days - spf record, etc... anything on the reverse dns side I should do?

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SysExpertCommented:
Again, when you change the MX records etc on your Public IPs via your ISP, it should handle all the rest.

USE
http://www.intodns.com
to check it out.

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babaganooshAuthor Commented:
the mx records are with our web hosting company, not the ISP.  

intodns.com is very handy!  Thanks.  It talks about reverse DNS which points to comcast:

Reverse MX A records (PTR) Your reverse (PTR) record:
113.179.152.75.in-addr.arpa ->  75-152-179-113-Philadelphia.hfc.comcastbusiness.net
You have reverse (PTR) records for all your IPs, that is a good thing.

With all the checks and balances to cut down spam these days, is that OK?  Should I request / expect for comcast to list us and not them in the PTR record?  
 
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