>Well, if you've got proper forward and reverse DNS, and your portable >SMTP server identifies itself properly, and you are using networks that >don't filter outbound port 25, AND you have DKIM configured correctly >and aren't using it for a situation for which it is inappropriate, then >you'll get the same results with a portable SMTP server that you would >sending through a properly configured static server.
Not really. Large mail system like Gmail and Yahoo have a pretty good map of the IPv4 address space. If you're sending from a residential DSL or cable modem range, they'll likely reject any mail you send directly no matter what you do. R's, John
