spamd system impact

[Jakob Fix <jakob_(_dot_)_fix_(_at_)_gmail_(_dot_)_com>]

Hi, I am wondering about the impact my anti-spam measures may have.

Looking at my spamd log, it seems like somebody (senegalese 419 scammers) is
bombarding me and my trusty old 486 OpenBSD 3.6 firewall with loads of smtp
connections.  Well, "loads" is very much exaggerated for the professional net
admin, but for my little home network seeing "connected (10/10)" is quite novel.
 The cpu is fine, around 97% idle.

I read that spamd is meant to have minimal impact on the system performance, but
 could someone please elaborate what the "connected (xx/xx)" bits mean, and what
the upper limit of the xx is, ie when should I get concerned?

Thanks in advance,
Jakob.


[... lines wrapped at the request of gmane ...]
Apr  4 17:52:00 dopey spamd[21647]: 213.154.87.28: 
connected (7/7), lists: spamhaus
Apr  4 17:52:00 dopey spamd[21647]: 213.154.87.28: 
disconnected after 152
seconds. lists: spamhaus
Apr  4 17:52:47 dopey spamd[21647]: 209.126.222.30: 
connected (7/7), lists: spamhaus
Apr  4 17:53:02 dopey spamd[21647]: 213.154.87.28: 
connected (8/8), lists: spamhaus
Apr  4 17:53:02 dopey spamd[21647]: 213.154.87.28: 
connected (9/9), lists: spamhaus
Apr  4 17:53:02 dopey spamd[21647]: 213.154.87.28: 
connected (10/10), lists: spamhaus
Apr  4 17:53:03 dopey spamd[21647]: 213.154.87.28: 
disconnected after 151 seconds. lists: spamhaus
Apr  4 17:53:07 dopey last message repeated 2 times
Apr  4 17:53:38 dopey spamd[21647]: 213.154.87.28: 
connected (8/8), lists: spamhaus
Apr  4 17:53:39 dopey spamd[21647]: 213.154.87.28: 
disconnected after 151 seconds. lists: spamhaus
Apr  4 17:53:51 dopey spamd[21647]: 213.154.87.28: 
connected (8/8), lists: spamhaus
Apr  4 17:53:54 dopey spamd[21647]: 213.154.87.28: 
disconnected after 151 seconds. lists: spamhaus
Apr  4 17:54:31 dopey spamd[21647]: 213.154.87.28: 
disconnected after 151 seconds. lists: spamhaus
Apr  4 17:54:42 dopey spamd[21647]: 213.154.87.28: 
connected (7/7), lists: spamhaus
Apr  4 17:55:33 dopey spamd[21647]: 213.154.87.28: 
disconnected after 115 seconds. lists: spamhaus
Apr  4 17:55:33 dopey spamd[21647]: 213.154.87.28: 
disconnected after 102 seconds. lists: spamhaus
Apr  4 17:55:33 dopey spamd[21647]: 213.154.87.28: 
disconnected after 51 seconds. lists: spamhaus
Apr  4 17:55:33 dopey spamd[21647]: 213.154.87.28: 
disconnected after 151 seconds. lists: spamhaus
Apr  4 17:55:33 dopey last message repeated 2 times
Apr  4 17:55:56 dopey spamd[21647]: 213.154.87.28: 
connected (2/2), lists: spamhaus 
Apr  4 17:55:56 dopey spamd[21647]: 213.154.87.28: 
connected (3/3), lists: spamhaus
Apr  4 17:55:56 dopey spamd[21647]: 213.154.87.28: 
connected (4/4), lists: spamhaus
Apr  4 17:55:56 dopey spamd[21647]: 213.154.87.28: 
connected (5/5), lists: spamhaus
Apr  4 17:55:57 dopey spamd[21647]: 213.154.87.28: 
connected (6/6), lists: spamhaus
Apr  4 17:55:57 dopey spamd[21647]: 213.154.87.28: 
connected (7/7), lists: spamhaus
Apr  4 17:56:11 dopey spamd[21647]: 213.154.87.28: 
disconnected after 15 seconds. lists: spamhaus
Apr  4 17:56:11 dopey last message repeated 3 times
Apr  4 17:56:11 dopey spamd[21647]: 213.154.87.28: 
disconnected after 14 seconds. lists: spamhaus
Apr  4 17:56:11 dopey spamd[21647]: 213.154.87.28: 
disconnected after 14 seconds. lists: spamhaus
[...]