Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

Rechercher dans l’assistance

Évitez les escroqueries à l’assistance. Nous ne vous demanderons jamais d’appeler ou d’envoyer un SMS à un numéro de téléphone ou de partager des informations personnelles. Veuillez signaler toute activité suspecte en utilisant l’option « Signaler un abus ».

En savoir plus
Ce sujet de discussion a été archivé. Veuillez poser une nouvelle question si vous avez besoin d’aide.
Archivé

Cannot snd emails to a gmail adress

Thunderbird Envoyer et recevoir des e-mails
Wayne Mery replied il y a 1 an
dforrest
dforrest

Suddenly I cannot send emails with Thunderbird to anyone with a gmail account.

I get a message: 

   host gmail-smtp-in.l.google.com [142.250.27.26]
   SMTP error from remote mail server after end of data:
   550-5.7.26 Your email has been blocked because the sender is unauthenticated.
   550-5.7.26 Gmail requires all senders to authenticate with either SPF or DKIM.
   550-5.7.26
   550-5.7.26  Authentication results:
   550-5.7.26  DKIM = did not pass
   550-5.7.26  SPF [vincysurf.com] with ip: [84.116.50.179] = did not pass

I started to have this problem and get this message yesterday. All was OK before then.

Can you please assist.

Suddenly I cannot send emails with Thunderbird to anyone with a gmail account. I get a message: host gmail-smtp-in.l.google.com [142.250.27.26] SMTP error from remote mail server after end of data: 550-5.7.26 Your email has been blocked because the sender is unauthenticated. 550-5.7.26 Gmail requires all senders to authenticate with either SPF or DKIM. 550-5.7.26 550-5.7.26 Authentication results: 550-5.7.26 DKIM = did not pass 550-5.7.26 SPF [vincysurf.com] with ip: [84.116.50.179] = did not pass I started to have this problem and get this message yesterday. All was OK before then. Can you please assist.

Toutes les réponses (3)

dforrest
dforrest Auteur de la question

Title should be:

"Cannot send emails to a gmail address"

DavidGG
DavidGG

Are you sending from an address belonging to a domain you own? Looks like your domain isn't configured properly to use SMTP authentication stuff (DKIM, SPF) meant to prevent abuse, and that's what's causing you to be blocked. This is something you'll have to solve at the website of your email provider. It may be as simple as figuring where those features are available and enable them, or you may need your email provider to help you solve the problem…

Wayne Mery
Wayne Mery
  • Modérateur
  • Les 10 premiers contributeurs

DavidGG said
Are you sending from an address belonging to a domain you own? Looks like your domain isn't configured properly to use SMTP authentication stuff (DKIM, SPF) meant to prevent abuse, and that's what's causing you to be blocked. This is something you'll have to solve at the website of your email provider. It may be as simple as figuring where those features are available and enable them, or you may need your email provider to help you solve the problem…

dforrest ?