SPAM messages in pureos-changes list

General
1

I accepted some spam messages in the list by mistake when trying to discard them. Sorry about it if you got a wave of spam messages from this list.

Praveen

2 Likes
2

So there is a pureos-changes mailing list? Sounds great :slight_smile:

Could you share a link to where that is, where one can find out how to subscribe and so on?

2 Likes
3
3 Likes
4

Latest spam :slight_smile: says

Does this pass SPF? Does it have DKIM signature?

for which the answers, I believe, are Yes and No.

Comments on those:

  1. An SPF pass depends on whether it’s IPv4 or IPv6. For my server it was IPv6 and IPv6 passed, but that tells me nothing about whether it would have passed if it had been IPv4.
  2. My server does not mandate DKIM. It merely notes that the sending mail server did not sign the message, for now (but even now the DKIM result is usable in anti-spam blocking rules if I so desired). However I would judge that you are close to being on borrowed time in not using DKIM. I understand that there are complications with using DKIM in a mailing list.
2 Likes
5

This was a test mail sent by me. Previous messages from the same sender (pureos archive software) were on hold, so I was expecting the test mail to be put on hold as well. But apparently it went through, so this is good for future mails from pureos archive. I did change a few settings and added this sender as a member - earlier I tried to allow mails from this address as a non member, but it were on hold still. So looks like we are good for now. I will still explore configuring DKIM and making the spam filter stricter.

Both ipv4 and ipv6 ip address are in SPF (ipv6 address was missing earlier, I added it now)

$ dig +short -t txt artemis.puri.sm
"v=spf1 ip4:159.203.221.185 ip4:192.241.155.152 ip4:107.170.236.180 ip4:138.201.228.37 ip4:88.99.243.238 ip6:2a01:4f8:10b:415::2 -all"

Now mails from the archive are DKIM signed and enforce DMARC. So I can be stricter with lists spam filter now.

2 Likes
6

spam filter threshold (rspamd) has been reduced from 15 to 7 (this was too lenient towards spam) so hopefully less spam will pass the filter.

Basically spam filter will assign scores to a mail based on different criteria and good properties will get negative score and bad properties will get positive score. Good mails generally have a negative score.

2 Likes