--On 24 June 2010 08:50:08 -0400 W B Hacker <wbh@???> wrote:
> Ian Eiloart wrote:
>>
>>> --On 21 June 2010 19:12:56 -0400 W B Hacker <wbh@???> wrote:
>>>
>
> *trimmed*
>
>>> Roughly 32% - just under a third. HOWEVER ... one has to wonder how
>>> close the experience of a University is to the 'general case'.
>
> *trimmed*
>
>>
>> None of it was local mail. This isn't my MSA log. In general, the
>> traffic is from large well known service providers.
>>
>
> ACK. That makes a significant difference.
>
> One presumes the big 'n' public ISP's are major players.
>
Here's our top 40 sending domains that we've accepted email for in the past
few days. These are SMTP MAIL FROM domains. 15 of these domains also appear
in our top 50 domains DKIM using domains. 22 use SPF, 11 use both, and 3
(including us) use neither.
Of course, those domains that use both SPF and DKIM will get an
authentication hit for legitimate email, one way or the other. That's
because the pathways that break DKIM should be SPF safe, and vice-versa.
exigrep '<=' exim_mx_mainlog.2010-06-2* | eximstats -ne -nr -byedomain
* - also in our list of top 50 DKIM using domains
% - domain publishes SPF
Top 40 sending edomains by message count
----------------------------------------
Messages Bytes Average Sending edomain
*% 2987 11MB 3861 facebookmail.com
1669 6851KB 4203 <>
*% 1292 218MB 173KB gmail.com
% 1037 47MB 46KB jiscmail.ac.uk
* 778 51MB 67KB returns.groups.yahoo.com
% 759 205MB 277KB hotmail.com
719 1500KB 2136 sussex.ac.uk
*% 660 70MB 109KB googlemail.com
* 543 93MB 175KB yahoo.com
*% 446 22MB 51KB bounces.amazon.com
* 347 49MB 145KB yahoo.co.uk
% 269 4555KB 17KB ukrs238770.pur3.net
*% 266 4463KB 17KB alerts.targetjobs.co.uk
*% 261 8567KB 33KB in.constantcontact.com
* 254 23MB 93KB btinternet.com
% 252 3907KB 16KB bounce.dbgi.co.uk
*% 241 5354KB 22KB ebay.co.uk
*% 227 2139KB 9649 bounces.freecycle.org
% 213 1263KB 6071 job-lin-mul-l01.eduserv.org.uk
208 2391KB 11KB lists.bham.ac.uk
% 204 44MB 221KB hotmail.co.uk
*% 192 7597KB 40KB e3.emarsys.net
% 158 708KB 4588 socialsciencesconference.com
% 153 35MB 234KB ids.ac.uk
*% 152 1380KB 9296 bounce.linkedin.com
% 146 4414KB 30KB cern.ch
*% 144 5427KB 38KB googlegroups.com
% 136 93MB 700KB aol.com
% 136 2339KB 17KB bounce.exacttarget.com
129 9006KB 70KB bsms.ac.uk
--
Ian Eiloart
IT Services, University of Sussex
01273-873148 x3148
For new support requests, see
http://www.sussex.ac.uk/its/help/
