Of course I know you may be correct...I'm just saying I would be surprised. I just looked their SMTP server at dsbl.org, and it is not listed. But it could be listed elsewhere.

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>The larger the ISP is, the bigger the chance they could be blacklisted as they have tons of users who can use their SMTP server to send email before they even notice it. Basically, it's really simple. Anyone can verify if a specific server is listed or not to the top spam blocker servers. If they are not listed, then the problem might have been a bad connection. However, from what was reported to me, the message received was the same as when it is blocked from our server. So, that's why I assumed it was the case.