Form not sending with @gmail.com adresses

Hello,

I’ve a problem with contact form 7 setup. I’ve created a contact form for the visitors to download a pdf.
The form is not working with @gmail addresses with the following message : “There was an error trying to send your message. Please try again later.”
I’m using wp mail SMTP with gmail api. My “from” field is the same as the wordpress admin. I’ve you a got a solution ?

Best regards,

Léopold

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