Originally Posted by BOH
Why will an account with
www.no-ip.com help and how will this affect my existing ISP / e-mail address etc?
Incoming mail is retrieved from your current pop3 account. Outlook will send the outgoing mail to no-ip SMTP servers. Addresses are not affected either way.
Why you can't send mail is as follows: (From no-ip site)
ISPs often block port 25, the port on which email is sent. This is done to prevent spam from unwitting or comprimised computers. But this also blocks many legitimate users who would like to send email from their personalized accounts. Other spam stopping techniques, such as requiring reverse DNS also hinder legitimate users who want to send email. No-IP's Alternate-port SMTP gets around these problems by letting you inject mail to our system for delivery. We take care of the details and you just send. Not only that, when using Internet connections provided at airports, hotels, friend's places, even at work, you'll never have to change your SMTP settings!
No-IP's Alternate-port SMTP can easily be used with almost any modern email client or server, including Outlook, Outlook Express, and Exchange. If your mail server supports a smarthost/nexthop configuration and SMTP AUTH it will work with Alternate-port SMTP.
It isn't very complicated to set up.