theju [20/01/10 17:14 -0000]: >But I have another doubt, suppose that a particular ISP does not allow for >changing the PTR records or assigns dynamic IPs (like BSNL), then would it >not be possible for hosting an email server? Would services like Gmail >blacklist such IPs completely?
You run a mailserver on a dynamic IP - and you wont be able to send email almost anywhere at all. Most mailserver admins block mail sent direct to their incoming mailserver (their MX) from dynamic IPs. See http://www.spamhaus.org/pbl/ for more on that
