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Obsolete Releases => SME Server 9.x => Topic started by: holck on September 26, 2016, 07:53:16 AM

Title: Statistics for denied, incoming email
Post by: holck on September 26, 2016, 07:53:16 AM

I run a mail-server with various spam protection mechanisms, including fail2ban, DNSBL, and RHSBL.

No. of queued emails	684
No. of denied emails	2829

Reasons for denial:

Auth (wrong username/password)	143	5 %
Relay (unknown receiver)	56	2 %
DNSBL	2453	87 %
RHSBL	25	1 %
Host (e.g. ylmf-pc)	125	4 %
Spamassassin	3	0 %
Clamav	1	0 %
Early talker	7	0 %
TLS negotiation	12	0 %

It is interesting for me to see how much spam is handled by DNSBL, and how little impact Clamav and Spamassassin have.

Jesper H, Denmark

Title: Re: Statistics for denied, incoming email
Post by: Knuddi on September 26, 2016, 07:35:27 PM

Hi Jesper,

Which DNSBLs are you using?

Have you seen this post from me: https://forums.contribs.org/index.php/topic,52665.0.html

/Jesper

Title: Re: Statistics for denied, incoming email
Post by: holck on September 26, 2016, 10:57:26 PM

Hi Jesper

Here is some small statistics regarding the DNSBLs and RHSBLs I use:

 
  Spamhaus:          3596 (97 %)
  Spamcop:             11 ( 0 %)
  Uceprotect:          27 ( 1 %)
  Uribl:               21 ( 1 %)
  Barracudacentral:    31 ( 1 %)
  Surbl:               10 ( 0 %)

And yes, I saw your post - your suggestion looks fine to me. But I also feel I'm doing quite well with the lists I already have. I see very little spam get through.

/Jesper

PS: As some of you will have already noted - Jesper is quite a common name in Denmark ...