Mailsending ipv6 to Google-Mailservice fails

Hi, an update : my emails are still tagged as spam by gmail.
I tried https://mxtoolbox.com, and checked the dkim lookup with odea.fr:default, the result is green...
So I thought it was gmail the problem, but I checked with https://www.mail-tester.com and it says that my message is not signed with DKIM !
In ispconfig, when I go to email / odea.fr, DKIM is generated, and I already added the TXT domain :

Here is the result of this host command :

Code:

$ host -t txt default._domainkey.odea.fr.
default._domainkey.odea.fr descriptive text "v=DKIM1; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDB05ZwrrM3RTIJeK3Q829KR9JfN/(cut)"

I don't have "h=sha256;" and "s=*;", that wasn't generated by ispconfig, don't know if it's normal.
I have no error message from gmail...
I have a hard time to figure out if DKIM is well activated or not, for me it is, but not for mail-tester, and maybe (I don't know) not for gmail.

 

Indeed, no mention of DKIM in the emails, which is strange, because from an ispconfig point of view it should be active :

 

OK I'm getting close !
@till you said in an other post "Rspamd or Amavis does DKIM signing on your system".
But, because I don't have a lot of RAM on my server, I disabled rspamd and amavis !
https://kentechnote.blogspot.com/2017/01/ubuntu-1604-and-ispconfig-31-stopping.html
Is there a way to still sign the messages with dkim without amavis ?

 

I launched ispconfig_update.sh to have fresh config files.
amavisd and clamav are running, I'm still under debian 9, so if i'm correct amavis will handle the spamassassin's filters.
I still don't have dkim signature.

 

I figured out :
I had to add manually an entry in /etc/amavis/conf.d/60-dkim

Code:

dkim_key('odea.fr', 'default', '/var/lib/amavis/dkim/odea.fr.private');

I don't know why ispconfig doesn't add it by itself maybe a permission issue ? :

Code:

root@ns1:/etc/amavis/conf.d# ll
total 68
-rw-r--r-- 1 root root    1610 janv. 24  2016 01-debian
-rw-r--r-- 1 root root     692 janv. 24  2016 05-domain_id
-rw-r--r-- 1 root root     429 janv. 24  2016 05-node_id
-rw-r--r-- 1 root root   20691 janv. 24  2016 15-av_scanners
-rw-r--r-- 1 root root     717 janv. 24  2016 15-content_filter_mode
-rw-r--r-- 1 root root    9538 janv. 24  2016 20-debian_defaults
-rw-r--r-- 1 root root     573 janv. 24  2016 25-amavis_helpers
-rw-r--r-- 1 root root    2130 janv. 24  2016 30-template_localization
-rw-r----- 1 root amavis  3296 août  20 12:47 50-user
-rw-r--r-- 1 root root     184 août  20 21:59 60-dkim

 

My emails are still tagged SPAM by gmail :/
10/10 on mail-tester.com
rDNS/PTR, SPF, DKIM, DMARC = OK
For some domains on my server, emails are tagged spam (ex: vegan.fr), for some it's OK (ex: odea.fr). I compared headers of OK emails with tagged spam emails, and I see no difference.
No domain are blacklisted (except UCEPROTECTL3 but it's the same for all domains, even those not tagged spam).
I don't know where else to check other than directly contact gmail (which is almost impossible).
Could I check something else ? I'm out of idea.

 

I just check with https://toolbox.googleapps.com/apps/checkmx/
the results are very very strange !

I'm not sure for SPF : in red it's written : SPF needs to authorize Google's server to send emails to the domain.
I'm very confused.

 

Yes you're right ! I guest I'm trying too much things to find out the root cause of my problem...it's driving me crazy...
So how can it be possible to have 10/10 at mail-tester, and no problem with mxtoolbox and still be tagged as spam by gmail ?

 

Thanks for your time.
My IP seems to be OK with mxtoolbox and other blacklist search website, maybe it's internal to Google.
I try to send "test email" with "normal human content", but maybe it's not good enough.
I'll try to send emails only with ipv4 with postfix.
I already added one domain in postmaster.google.com, the problem from what I understood, is that it needs a huge amount of emails to starting to generate stats, so atm my dashboard has no data. I'll try to contact Google directly.