Can't send message

Hardware: Old computer
YunoHost version:
yunohost:
repo: stable
version: 11.0.11
yunohost-admin:
repo: stable
version: 11.0.11
moulinette:
repo: stable
version: 11.0.9
ssowat:
repo: stable
version: 11.0.11

I have access to my server : Through SSH, through the webadmin, direct access via keyboard / screen

Are you in a special context or did you perform some particular tweaking on your YunoHost instance ? : no

Description of my issue
Can’t send message from Thunderbird client since few time, it was working before :

host smtp-in.orange.fr[80.12.26.32] said: 501 5.1.0
    IbTYp8gdBuF4f Emetteur invalide, Veuillez verifier la configuration SPF/DNS
    de votre nom de domaine. Invalid Sender. SPF check failed, please verify
    the SPF/DNS configuration for your domain name. OFR003_398 [398] (in reply
    to MAIL FROM command)
  5: 
    description: Email
    id: mail
    items: 
      0: 
        status: SUCCESS
        summary: The SMTP mail server is able to send emails (outgoing port 25 is not blocked).
      1: 
        status: SUCCESS
        summary: The SMTP mail server is reachable from the outside and therefore is able to receive emails!
      2: 
        status: SUCCESS
        summary: The IPs and domains used by this server do not appear to be blacklisted
      3: 
        status: SUCCESS
        summary: 0 pending emails in the mail queues

Thanks

What do you mean, “since view time” ?

Does the diagnosis complain about DNS records ?

Also could it be that you configured a mail relay ?

Hello,

It looks like it happen only with name@wanadoo.fr adresses. It never work before I think. So I can send mails, but not to this type of adress.

I didn’t configure a mail relay.

In diagnosis
email
Reverse dns is not ok for my domain. I can’t configure it.

dns

Type: TXT
Name: name1
Current value: ['"v=spf1 include:mx.ovh.com ~all"', '"v=spf1 a mx -all"']
Expected value: "v=spf1 a mx -all"
        ignored: True
        meta: 
          category: mail
          domain: mondomaine.com
        status: ERROR
        summary: Some DNS records are missing or incorrect for domain mondomaine.com (category mail)