or download this
#!/usr/bin/perl
use FileHandle;
...
#Jul 3 11:19:00 bouncer postfix/smtpd[14071]: reject: RCPT from unkno
+wn[207.250.144.22]: 530 <rrrrrr@osprey.net>: Recipient address reject
+ed: Cannot find your hostname, [207.250.144.22]. Ask your system mana
+ger to fix your reverse domain name registration. If you are sending
+ spam, go away. ; from=<bounce-isp-equipment-34419@lists.isp-lists.co
+m> to=<rrrrrrrr@osprey.net>
#Jan 15 19:52:29 staypuft postfix/smtpd[8530]: reject: RCPT from pp2.d
+ailyprmo1.com[64.70.17.74]: 554 <rrrrrr@osprey.net>: Recipient addres
+s rejected: Service unavailable; [64.70.17.74] blocked by relays.osir
+usoft.com. See http://relays.osirusoft.com for details. ]; from=<rrrr
+r@dailyprmo1.com> to=<rrrrrr@osprey.net>