This got bounced back, and it happens every time I email this person [email][/email] SMTP error from remote mail server after RCPT TO:<>: host os-srvr-proxy01.kabeltex.nl [82.151.32.101]: 554 5.7.1 <[my address]>: Sender address rejected: SBL62478 When I google on SBL62478 I get this as the #1 hit [URL]http://www.spamhaus.org/sbl/query/SBL62478[/URL] and it says [QUOTE] SBL62478 is not in the SBL. This may be because SBL62478 has been resolved and removed from the SBL. The SBL DNS zone is refreshed every 10 minutes and broadcast to 60 Spamhaus DNSBL servers in 14 countries. If you are still experiencing a block on your mail by some providers a few hours after seeing this 'not in the SBL' message, your IP is probably blocked by some other DNSBL system.[/QUOTE] Could it be a fake bounce, allowing the person to receive emails with the sender thinking they are not getting through?