Murray wrote:
> I have some trouble believing that gmail has posted corrupted keys or used
> bogus signatures and not fixed the problem. However, I also see some
> failures as their mail is munged by intermediaries; since I started
> tracking, gmail.com has had 755 passes and 560 failures, and
> googlemail.com has 125 passes and 106 failures. googlegroups.com is much
> better, with 179 passes and only 9 failures.
Here are DKIM signature statistics (just their DKIM signature, not DK)
of Google mail received during last 7 days at our site, grouped by a
signing domain (d tag).
Just mail with signatures (valid or failed) is counted, mail without a
signature from these domains is ignored (i.e. people submitting their
mail through some other ISP but keeping a Google domain in their From
is not counted).
gmail.com:
VALID: 2259 (of which 72 through a mailing list)
FAILED: 260 (of which 240 through a mailing list,
and 5 failed on DNS query timeout)
failures 10 %;
discounting mail from mailing lists: failures 0.9 %
googlemail.com:
VALID: 92 (of which 9 through a mailing list)
FAILED: 9 (of which 9 through a mailing list, i.e. all of failed ones)
failures 9 %;
discounting mail from mailing lists: failures 0.0 %
googlegroups.com:
VALID: 106 (of which 41 through a mailing list)
FAILED: 5 (of which 5 through a mailing list, i.e. all of failed ones)
failures 4.5 %;
discounting mail from mailing lists: failures 0.0 %
yahoo.com: (DomainKeys signatures)
VALID: 343 (of which 3 through a mailing list)
FAILED: 83 (of which 57 through a mailing list)
failures 19.5 %;
discounting mail from mailing lists: failures 7.1 %
Seems like my stats on gmail.com and googlemail.com show significantly
different result, I wonder why (the googlegroups.com is about the same).
My stats were collected from amavisd log which shows Mail::DKIM module
signature verification results.
I'd say the 0.9 % of failures on gmail.com mail not counting mailing
lists is pretty good, and the 0 failures on direct mail from
googlemail.com+googlegroups.com is as it should be.
Mark
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