[Exim] Problems receiving from list

I've noticed this recently:
2004-05-03 12:57:55 SMTP data timeout (message abandoned) on connection from
exim-colo-01.whoc.theplanet.co.uk [195.92.249.251]
2004-05-03 13:21:40 SMTP data timeout (message abandoned) on connection from
exim-colo-01.whoc.theplanet.co.uk [195.92.249.251]
2004-05-03 13:57:07 SMTP data timeout (message abandoned) on connection from
exim-colo-01.whoc.theplanet.co.uk [195.92.249.251]
2004-05-03 14:35:09 SMTP data timeout (message abandoned) on connection from
exim-colo-01.whoc.theplanet.co.uk [195.92.249.251]
2004-05-03 15:36:15 SMTP data timeout (message abandoned) on connection from
exim-colo-01.whoc.theplanet.co.uk [195.92.249.251]

I'm using exim 4.24 (TLS enabled with openssl 0.9.7). This started
happening since I last restarted exim (log rotation). Nothing has changed
since the last time I stopped it so I'm not sure what's up with it. I don't
seem to have any problems with any other servers that I can see.

--
Lab tests show that use of micro$oft causes cancer in lab animals