I have only changed the DNSBL now it will come back with "NOQUEUE: reject RCPT"
Mar 12 14:49:53 mail postfix/smtpd[5425]: disconnect from localhost[127.0.0.1] Mar 12 14:49:54 mail postfix/smtp[5428]: 759654071A: to=<*@stamper.itconsult.co.uk>, relay=et05.itconsult.net[135]:25, delay=1.1, delays=0.1/0/0.68/0.27, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 082FC1AD104) Mar 12 14:49:54 mail postfix/qmgr[5408]: 759654071A: removed Mar 12 14:49:55 mail postfix/postscreen[5446]: CONNECT from [IP]:4458 to [IP]:25 Mar 12 14:49:55 mail postfix/dnsblog[5451]: addr IP listed by domain list.dnswl.org as 127.0.10.0 Mar 12 14:49:55 mail postfix/smtps/smtpd[5411]: disconnect from mail.Name.com[IP] Mar 12 14:50:02 mail postfix/postscreen[5446]: NOQUEUE: reject: RCPT from [IP]:4458: 450 4.3.2 Service currently unavailable; from=<>, to=<myemailaddress>, proto=ESMTP, helo=<m67.itconsult.net> Mar 12 14:50:02 mail postfix/postscreen[5446]: PASS NEW [IP]:4458 Mar 12 14:50:02 mail postfix/postscreen[5446]: DISCONNECT [IP]:4458 [Main.cf - Section Postscreen snip] # SPAM parameters postscreen_access_list = permit_mynetworks, hash:/etc/postfix/access postscreen_bare_newline_enable = yes postscreen_bare_newline_action = drop postscreen_pipelining_enable = yes postscreen_pipelining_action = drop postscreen_dnsbl_action = drop postscreen_dnsbl_sites = zen.spamhaus.org*3 bl.mailspike.net*2 b.barracudacentral.org*2 bl.spameatingmonkey.net bl.spamcop.net psbl.surriel.com swl.spamhaus.org*-4 list.dnswl.org=127.0.[2..15].0*-2 list.dnswl.org=127.0.[2..15].1*-3 list.dnswl.org=127.0.[2..15].[2..3]*-4 wl.mailspike.net=127.0.0.[17;18]*-1 wl.mailspike.net=127.0.0.[19;20]*-2 postscreen_dnsbl_threshold = 3 postscreen_dnsbl_whitelist_threshold = 0 postscreen_dnsbl_reply_map = texthash:/etc/postfix/dnsbl_reply postscreen_greet_action = drop postscreen_non_smtp_command_enable = yes best thanks Mauri