SMTP Error: data not accepted

  • pigi77

    (@pigi77)


    1 month ago

    HI,

    Sending emails with MailPoet has not worked for a few days. The attempt pauses with the following error message:

    SMTP Error: data not accepted. Subscriber not processed (<***@***>)

    The sending mode is SMTP, the MailPoet version is 5.3.3
    By deleting the subscriber from the list, the problem occurs on the next one.
    I sent a test email via the MailPoet settings and the mail arrived correctly, so the SMTP configuration is correct.
    I contacted the server that hosts the site, Aruba, and they confirmed that the configuration is correct and there are no problems.
    I also read the page https://kb.mailpoet.com/article/300-why-sending-is-paused-when-using-smtp but it didn’t help me.

    The page I need help with: [log in to see the link]

Viewing 1 replies (of 1 total)
  • Plugin Author Ján Miklá?

    (@neosinner)

    Hi @pigi77, this error message comes from the PHPMailer library, which MailPoet uses when sending emails. As the KB article suggests, we normally see SMTP Error: data not accepted error when From address doesn’t match.

    But the issue can also be in the email content and/or headers. If you see this error for the first time with a specific newsletter, I’d recommend trying sending a different one, with different content to a couple of subscribers (ideally those, who can’t receive the first one). If this new email is successfully sent, the issue might indeed be the content of the email, which the server rejects.

Viewing 1 replies (of 1 total)
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