[exim] How can I get rid of 58.69.173.42

How can I get rid of this connection without manually entering it to a
firewall?

Is there a way to delay by a minute if no host name found?

2006-10-14 13:58:34 no host name found for IP address 58.69.173.42
2006-10-14 13:58:34 no IP address found for host E-20 (during SMTP
connection from (E-20) [58.69.173.42])
2006-10-14 13:58:48 no host name found for IP address 58.69.173.42
2006-10-14 13:58:48 no IP address found for host E-20 (during SMTP
connection from (E-20) [58.69.173.42])
2006-10-14 13:59:38 no host name found for IP address 58.69.173.42
2006-10-14 13:59:38 no IP address found for host E-20 (during SMTP
connection from (E-20) [58.69.173.42])
2006-10-14 13:59:51 no host name found for IP address 58.69.173.42
2006-10-14 13:59:51 no IP address found for host E-20 (during SMTP
connection from (E-20) [58.69.173.42])
2006-10-14 14:00:24 no host name found for IP address 58.69.173.42
2006-10-14 14:00:24 no IP address found for host E-20.xiau9r1e.com
(during SMTP connection from (E-20.xiau9r1e.com) [58.69.173.42])
2006-10-14 14:01:03 no host name found for IP address 58.69.173.42
2006-10-14 14:01:03 no IP address found for host E-20 (during SMTP
connection from (E-20) [58.69.173.42])
2006-10-14 14:01:34 H=(E-20) [58.69.173.42] rejected EHLO or HELO e-20:
invalid HELO syntax 1 E-20
2006-10-14 14:01:38 no host name found for IP address 58.69.173.42
2006-10-14 14:01:39 no IP address found for host E-20.iadwgjue.net
(during SMTP connection from (E-20.iadwgjue.net) [58.69.173.42])
2006-10-14 14:01:48 H=(E-20) [58.69.173.42] rejected EHLO or HELO e-20:
invalid HELO syntax 1 E-20
2006-10-14 14:01:59 no host name found for IP address 58.69.173.42
2006-10-14 14:01:59 no IP address found for host E-20 (during SMTP
connection from (E-20) [58.69.173.42])
2006-10-14 14:02:32 no host name found for IP address 58.69.173.42
2006-10-14 14:02:33 no IP address found for host
ku6tqeli.bogoa.comcast.net (during SMTP connection from
(ku6tqeli.bogoa.comcast.net) [58.69.173.42])
2006-10-14 14:03:11 no host name found for IP address 58.69.173.42
2006-10-14 14:03:11 no IP address found for host E-20 (during SMTP
connection from (E-20) [58.69.173.42])
2006-10-14 14:03:42 no host name found for IP address 58.69.173.42
2006-10-14 14:03:42 no IP address found for host E-20 (during SMTP
connection from (E-20) [58.69.173.42])
2006-10-14 14:04:13 no host name found for IP address 58.69.173.42
2006-10-14 14:04:14 no IP address found for host f1y3.adeu.comcast.net
(during SMTP connection from (f1y3.adeu.comcast.net) [58.69.173.42])
2006-10-14 14:04:48 no host name found for IP address 58.69.173.42
2006-10-14 14:04:48 no IP address found for host E-20 (during SMTP
connection from (E-20) [58.69.173.42])
2006-10-14 14:04:59 H=(E-20) [58.69.173.42] rejected EHLO or HELO e-20:
invalid HELO syntax 1 E-20
2006-10-14 14:05:21 no host name found for IP address 58.69.173.42
2006-10-14 14:05:21 no IP address found for host
4hh3vues.wu6d9.ameritech.net (during SMTP connection from
(4hh3vues.wu6d9.ameritech.net) [58.69.173.42])
2006-10-14 14:05:37 H=(ku6tqeli.bogoa.comcast.net) [58.69.173.42]
F=<Dickersondauphine@???> rejected RCPT
<killeen@???>: DNSBL listed at sbl-xbl.spamhaus.org
2006-10-14 14:05:37 unexpected disconnection while reading SMTP command
from (ku6tqeli.bogoa.comcast.net) [58.69.173.42]
2006-10-14 14:05:58 no host name found for IP address 58.69.173.42
2006-10-14 14:05:58 no IP address found for host E-20 (during SMTP
connection from (E-20) [58.69.173.42])
2006-10-14 14:06:11 H=(E-20) [58.69.173.42] rejected EHLO or HELO e-20:
invalid HELO syntax 1 E-20
2006-10-14 14:06:31 no host name found for IP address 58.69.173.42
2006-10-14 14:06:31 no IP address found for host E-20.rgavi9v.com
(during SMTP connection from (E-20.rgavi9v.com) [58.69.173.42])
2006-10-14 14:06:42 H=(E-20) [58.69.173.42] rejected EHLO or HELO e-20:
invalid HELO syntax 1 E-20
2006-10-14 14:07:06 no host name found for IP address 58.69.173.42
2006-10-14 14:07:06 no IP address found for host E-20 (during SMTP
connection from (E-20) [58.69.173.42])
2006-10-14 14:07:16 H=(f1y3.adeu.comcast.net) [58.69.173.42]
F=<Mackbuckboard@???> rejected RCPT
<killeen@???>: DNSBL listed at sbl-xbl.spamhaus.org
2006-10-14 14:07:16 unexpected disconnection while reading SMTP command
from (f1y3.adeu.comcast.net) [58.69.173.42]
2006-10-14 14:07:48 H=(E-20) [58.69.173.42] rejected EHLO or HELO e-20:
invalid HELO syntax 1 E-20