header issues

  • Resolved nutrition2change

    (@nutrition2change)


    5 years, 10 months ago

    Hello,

    I am using the free version of the newsletter plugin. It is a great plugin but I had to use a wp smtp plugin in order to deliver my emails. I currently cannot send emails as when i try to send emails i get an error shown below:

    EMAIL DELIVERY ERROR: the plugin WP Mail SMTP v2.0.1 logged this error during the last time it tried to send an email:

    Mailer: Outlook
    InvalidInternetMessageHeaderCollection: Maximum number of headers in one message should be less than or equal to 5.
    Date: 2020-05-15T22:43:38
    Please review your WP Mail SMTP settings in plugin admin area. Consider running an email test after fixing it.

    Now I spoke to the smtp support and they said that it will be due to the way the newsletter will try to send the email. Is there a way of reducing the headers? I only included one header.. so why is it trying to send more? the smtp plugin are saying that the fixing/modification needs to happen with the newsletter plugin as there isnt anything they can do. Can you please help?

    thank you

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

Viewing 4 replies - 1 through 4 (of 4 total)
  • Plugin Author Stefano Lissa

    (@satollo)

    5 years, 10 months ago

    Hi, actually we have not a way to reduce the headers, you should write some custom code and intercept the filter “newsletter_message_headers” (see our developer documentation).

    BTW that limitations sound like the provider you’re using is not to be used for mail marketing.

    Stefano.

    pawsnall

    (@pawsnall)

    5 years, 9 months ago

    Hi Stefano – I am receiving the same problem.
    I am also using WP SMTP Pro version, which enables Microsoft Office 365 Graph API (which as a service is fine for sending newsletters)

    Can we please raise this as a bug for investigation? I’ll do my best to add a filter as suggested above, but that’s a workaround and I’m not sure which headers I should be removing….

    Happy to provide a test environment if you’d like to see for yourself?

    Plugin Author Stefano Lissa

    (@satollo)

    5 years, 9 months ago

    Hi, you should ask to office 365 provider which headers they’re not accepting. Someone reported it is the List-Unsubscribe.

    You can try to disable just it on the “unsubscribe” configuration page.

    Stefano.

    cardiffandvale

    (@cardiffandvale)

    5 years, 4 months ago

    Did you get anywhere with this? I’m having the same issue

Viewing 4 replies - 1 through 4 (of 4 total)

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