This is certainly unfortunate and always the problem with shared hosting, but the extent of the block seems rather drastic.
For those who don't dig (i.e. customers) could you update the status page
http://forum.xilo.net/service-status/
to reflect this issue? It would help as these pages are used by helpdesks and they can be lazy buggers.
It seems that .90 is the problem. Any chance of getting the block narrowed a bit?
At 19:40 Spamhaus still says:
Ref: SBL56248
193.238.80.0/25 is listed on the Spamhaus Block List (SBL)
04-Jul-2007 21:32 GMT | SR14
<TABLE cellSpacing=2 cellPadding=0 width=604 bgColor=#ffd700 border=0><TBODY><TR><TD><TABLE cellSpacing=0 cellPadding=5 width=600 border=0><TBODY><TR><TD bgColor=#ffd700><TABLE cellSpacing=0 cellPadding=0 width=590 border=0><TBODY><TR><TD width=104>

</TD><TD width=486>
Wayne Mansfield</TD></TR></TBODY></TABLE></TD></TR><TR><TD bgColor=#e3e3e3>193.238.80.0/25 is listed on the Register Of Known Spam Operations (ROKSO) database as being assigned to, under the control of, or providing service to a known professional spam operation run by
Wayne Mansfield.
</TD></TR><TR><TD bgColor=#f3f3f3>Spam Hosting and DNS: w#w#w.britain-in-business.c#o#m
</TD></TR><TR><TD bgColor=#f3f3f3>w#w#w.britain-in-business.c#o#m 14400 IN CNAME britain-in-business.com
britain-in-business.com 14400 IN A 193.238.80.90
britain-in-business.com 86400 IN NS ns5.xilo.net
britain-in-business.com 86400 IN NS ns6.xilo.net
britain-in-business.com 86400 IN NS ns4.xilo.net
ns4.xilo.net 172800 IN A 193.238.80.31
ns5.xilo.net 172800 IN A 72.21.47.31
ns6.xilo.net 172800 IN A 193.227.247.31
britainevents.co.uk 3600 IN A 89.238.136.146
britainevents.co.uk 669 IN MX 10 mail.britainevents.co.uk
mail.britainevents.co.uk 669 IN A 89.238.136.146
britainevents.co.uk 172800 IN NS ns2.dnszones.net
britainevents.co.uk 172800 IN NS ns0.dnszones.net
britaininbusinessevents.co.uk 3600 IN A 89.238.136.147
britaininbusinessevents.co.uk 3600 IN MX 10 mail.britaininbusinessevents.co.uk
mail.britaininbusinessevents.co.uk 3600 IN A 89.238.136.147
britaininbusinessevents.co.uk 157504 IN NS ns0.dnszones.net
britaininbusinessevents.co.uk 157504 IN NS ns2.dnszones.net
ns0.dnszones.net 123541 IN A 213.230.203.88
ns2.dnszones.net 123541 IN A 194.79.28.2
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