On Tue, 9 Oct 2007, Jo Rhett wrote: | Both Crackberry and Verizon force you to use their mail servers. Some other | data providers are now doing transparent proxy on outbound e-mail. In short, | the user can't always control that.
True, to an extent. I don't know about the *berry, but imagine/hope that verizon allow encrypted SMTP-AUTH out on the appropriate alternate port (465/587). Do they ? However, even assuming your user *is* using the *berry server or the verizon transparent proxy, then mails they send will in the main emerge from a legit mail server run by grown-ups, which is far far less likely to be blacklisted then a user sending direct from a hotel connection or mobile dynamic IP etc etc.
