I'm getting the exact same issue. Would it be possible for Zen to route Tiscali emails through another server, or better, talk to Tiscali and tell them to sort out their receiving mail servers? My experience tells me that non-Tiscali customers are going to have an impossible task trying to explain the issue to various levels of helpdesk support...

Hi, I've recently switched hosting company and today for the first time have had trouble sending out an email via the Zen smtp server. I'm sending emails from my own domain, which is hosted by a third party. The DNS records look to be in order but I get the following error (only when I send to one particular address - so far) - I've *ed out the ...