> On every single incoming mail this is attached to it even from the exim
> list..
>
> no IP address found for host phpbbspprt840.gmail.com (during SMTP
> connection from tahini.csx.cam.ac.uk [131.111.8.192])
>
That's because, as you stated in a previous message, you have a deny list containing that hostname. Exim looks up the hostname when it gets a connection to see if the IP the connection is from that host. That hostname doesn't resolve:
$ dig phpbbspprt840.gmail.com
; <<>> DiG 9.3.6-P1-RedHat-9.3.6-20.P1.el5_8.5 <<>> phpbbspprt840.gmail.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 58335
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;phpbbspprt840.gmail.com. IN A
;; AUTHORITY SECTION:
gmail.com. 60 IN SOA ns1.google.com. dns-admin.google.com. 1508104 21600 3600 1209600 300
;; Query time: 12 msec
;; SERVER: 10.0.64.1#53(10.0.64.1)
;; WHEN: Fri Jan 4 10:09:33 2013
;; MSG SIZE rcvd: 98
So each connection will have that message.
John