When trying to send SMTP email, getting SMTP error from remote mail server after end of data:
550 MIME boundary length exceeded (see RFC 2046).
I have the latest stable version 1.16.1 installed and hosted at TMD Hostings.
Please help.

@SGI

I have never seen that error before and I cannot find that error anywhere on the web. Your best bet is to reach out to your host or email provider for further assistance.

Cheers.

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Environment details? (see Admin panel -> Dashboard -> Information)

a SMTP 550 error is pretty generic. You would probably need to look at the mailserver logs to get the rest of the error.

550 MIME boundary length exceeded (see RFC 2046)

That is not an error that I have run into personally. I do not see a whole lot of information on it.

Here is RFC 2046.
https://datatracker.ietf.org/doc/html/rfc2046
The word boundary appears in it 79 times.

I would definitely recommend that you reach out to your host about this.

  • SGI replied to this.

    ntozier
    Thanks for your suggestion, I will reach out to Hosting company to see what would be the solution.

    However, should you find some possible solution or any configuration to be done on any parameters in the osTicket installation please share.

      14 days later

      I have exactly the same, right after upgrading to 1.16.1. No problems before

      @parijke

      First make sure you are using PHP 8.0 for the site AND for the cron job (if applicable). If you've confirmed that then please apply the following pulls and retest:

      Cheers.

      17 days later

      Hello,
      I upgraded to OSTicket 1.16.1, applied the patches from the previous post and still get the error "SMTP error from remote mail server after end of data:
      550 MIME boundary length exceeded (see RFC 2046)."
      Was anyone able to solve it?

      8 days later

      I have the same problem, too, and I've upgraded to 1.16.2 which is supposed to solve som issues with sending e-mails. If I send e-mail to an Google account or to an Micro$oft Exchange account, I get this error.

        GandalfTheWhite

        What are the exact steps to replicate this issue? I am using v1.16.2, PHP 8.0, and Gmail SMTP. When I send an email to anyone (Gmail, MS, etc.) they get the email with no errors.

        Cheers.

            KevinTheJedi In my case the scenario is:

            • PHP 8
            • cpanel shared hosting (Softaculous's managed OSTicket)
            • mails sent by PHP mail() - not SMTP
            • was working fine in 1.16
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