I have a number of web sites and I use smtp servers for sending emails e.g. smtp.mydomain.co.uk using Thunderbird and Outlook Express. Recently I have been unable to send emails resulting in error messages to do with the smtp servers. I have taken my pcs to work and used their internet connection and everything is ok proving that the equipment is ok. I have contacted my broadband supplier and they said "Oh yes, we block all 3rd party smtp servers, you might be ok if you pay extra for a static IP address!" I was amazed by this response. Has anyone had the same experiences and can anyone recommend an ISP that doesn't block any services?