Peter wrote:
You probably have a static DHCP address still within the general dynamic
block. It shouldn't be a problem - unless you sending to AOL or Yahoo/BT 
No, not really..... but
AOL are particularly draconian with their anti-spam policy and won't
allow mail from a dynamic range, in you mail server software their is
usually some way of setting exceptions so that *@aol.com can be relayed
through the ISP instead.
Yahoo/BT use a terrible anti-spam method called grey-listing, again if
you send these mails through your ISP you shouldn't get any problems.
You may want want to setup SPF for your domain
(http://www.openspf.org/Introduction) which may up your chances of
getting mail to Yahoo/AOL and other stupid ISPs that implement stupid
anti-spam measures that they are overly cagey about.
