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Edmund Cramp

Send email to eac@motion-labs.com

Which Alt-N products do you use?

Outlook Connector

Most recent posts: Edmund Cramp

The MS Exchange autodiscover protocol - 01:44pm Sep 27, 2021 CDT - I'm seeing reports that a flaw in Microsoft's Autodiscover protocol, used to configure Exchange clients like Outlook (and implemented in MDaemon) can cause user credentials to leak to miscreants in certain circumstances. It would be nice to hear that the MD implementation has tested this and found that it's not a problem for us or, if there is a problem, that it's been fixed.

"Clean" viruses? - 06:57am Aug 26, 2021 CDT - I'm "tracking" the access attempts and find the daily numbers interesting but of course it's only guesswork. Three viruses got through the MDAV yesterday and another one this morning - and recently we've only been seeing only 20 to 40 login attempts an hour (with all viruses blocked) but today we're getting 500 dynamic screening login attempts an hour.
The stats are very helpful, not scary - Thank You!

Anti-Virus replacement for Mdaemon - 10:51am Jul 21, 2021 CDT - I tried using the holding queue for detected infections for a long time, it was about 99.9% effective but since this means that your server appears to be "accepting" malware deliveries then you get continuous malware and viruses sent to you because the malware authors believe that they are getting through the AV software..
I reset the system to "refuse to accept messages that are infected" about a month ago and the malware deliveries have dropped from 200+ a day to virtually zero now.
I use the Content Filter to quarantine potential infections e.g.*.img, *.exe, *.bat etc., files that may occasionally get through the AV scans when new malware is released.

DKIM settings? - 08:10am Jul 15, 2021 CDT - Thanks, now I understand the results - I have written SA rules that handle our customer and end-user environments - basically I've been customizing the SpamAssassin process ever since MD added it to the server so we have very few spam problems - I only see one or two spam emails in the inbox most days.

DKIM settings? - 06:47am Jul 15, 2021 CDT - Essentially everything is working fine but I'm just puzzled that every incoming message has these "unapproved" headers even when the message has passed all the checks:

Authentication-Results: mail.motion-labs.com,
spf=pass smtp.mailfrom=2021071506045246d54615ddda4ee4b249a71110c0p0na@bounces.amazon.com,
dkim=pass (good signature) header.d=amazon.com header.b=doBOXjX2qm,
dkim=pass (good signature) header.d=amazonses.com header.b=e7hDtXTVVX,
dmarc=pass header.from=amazon.com (p=quarantine sampling=90 pct=100),
X-MDDKIM-Result: unapproved (mail.motion-labs.com)
X-MDSPF-Result: unapproved (mail.motion-labs.com)

I'm just letting you know that I'm seeing something odd.


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