From: Ed Crowley [MVP] on
Maybe that's because:
- your domain or server is blacklisted
- your ISP is blacklisted
- they're doing a reverse DNS lookup and you don't have valid PTR reverse
lookup record in DNS
- they're using SPF and you don't have a valid SPF record in DNS
- you're using a dynamic IP address
- something else.

Blacklist lookup:
Ed Crowley MVP
"There are seldom good technological solutions to behavioral problems."

"news" <news_dont_spam_me> wrote in message
> Recently i've been getting NDR's saying:
> Action: failed
> Status: 5.5.0
> X-Supplementary-Info: < #5.5.0 smtp;552 Unable to process message:
> msg.1272621548.124850.15867 - error: recipient: emailaddress(a)
> failed, reason: consider the message to be spam>
> Anyone have any ideas on what can cause this? My mail servers are not on
> any RBL lists, as far as i can see.