In case they don't (and assuming that this is happening frequently): your message volumes are low enough that you could just capture your entire outbound TCP/25 traffic with tcpdump/tshark -w for a couple of days, then examine it with wireshark to work out what happened.

- Roland



On 23/11/2012 09:00, Raman Gupta wrote:
Anyone from Google on this list that we can prod to start sending
forensic reports? :)

On Thu 22 Nov 2012 07:55:01 PM EST, Franck Martin wrote:
Only forensic reports would help you. I see you have a ruf, but not
everyone sends forensic reports.

On 11/22/12 4:46 PM, "Raman Gupta" <[email protected]> wrote:

At least the contact form is not relevant here, as it sends via
postfix. However, there may very well be some other program or script
sending emails directly that I am not aware of. Which brings me back
to the original question: I don't see any meta-data in the report that
would help me to determine what that is.

Regards,
Raman

On 11/22/2012 07:06 PM, Franck Martin wrote:
You are sure you are not running on that server a script that would send
emails directly, without passing via postfix?

I see the website has a contact form, sometimes web servers tries to be
too smart: http://vivosys.com/contact

On 11/22/12 2:44 PM, "Raman Gupta" <[email protected]> wrote:

First of all, DMARC is very cool. Thanks to all involved in conceiving
it and setting it up.

I've set up DKIM with DMARC feedback for several domains I manage.

I thought everything was working fine, but I have started receiving
DMARC feedback reports showing that some emails are failing the DKIM
check. Here is an actual report:


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  Roland Turner | Director, Labs
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