New sendmail breaks ability to mail to *@mmode.com

[Jim Popovitch]

David M. Shirley wrote:
> 
> It's pretty clear now that this is purely an mmode.com problem but they 
> seem unable to locate anything.  If anyone has some insight, I'd love to 
> be able to tell them, "Hey did you check this...?"

First, Check that the IP address of your server(s) hasn't been 
blacklisted here:  http://www.completewhois.com/rbl_lookup.htm

Next, verify that your server(s) have proper DNS (A & PTR) records here: 
http://www.dnsreport.com

Hth,

-Jim P.