[hobbit] AntiSpam & RBL Hits - Does it Make Sense to Monitor?

In the past I have graphed inbound email volume via RRD, including a 'stacked' filled-area graph of rejects showing which DNSBL(s) triggered the reject.

Since I use 'rblsmtpd' to query 4 RBLs in series, it is useful to know which one is performing the best, so I can move it earlier in the sequence, or if one seldom gets a hit (or starts blocking everything) I can remove it.

As mentioned earlier, attractive graphs are eye-pleasing to management folk.

Kevin