Support » Plugin: MailPoet - Newsletters, Email Marketing, and Automation » MailPoet Error: Sending paused due to an technical issue

  • Last night, I planned an email sending (80.000 subscribers). When I checked the mailing this morning, I found the sending paused “due to an technical issue”. The error reads something like:

    Sending was paused due to a technical problem with SMTP: SMTP returned an unknown error. Unprocessed subscriber

    I had to remove the email from the list and could then resume the sending. I watched the process and got similar errors at 40%, 60% and 80%.

    So, I had to watch the sending on a sunday morning instead of having coffee with my girlfriend. Thank you!

    What, for heaven’s sake, is going on here? Why is the sending paused? And why do I have to manually remove the email from the list before I can resume the sending? This makes scheduled sending impossible. I can’t check the integrity of the emails before each sending. What am I missing here?

    Luckily, our hosting company accepts a sending rate of 500 emails per minute. With standard hosting sending would take 24 hours. Well, that sounds like a lot of fun.

    • This topic was modified 4 years, 1 month ago by cutu234.
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  • Hi @cutu234,

    Sending is paused when the SMTP server you’re using to send your emails returns an error which is classified as a hard error.

    In this case, it should be rejecting the emails if it detects the addresses as invalid for some reason.

    As there is no bounce handling out the box unless you are using our MailPoet Sending Service, you have to delete the subscriber and then resume sending.

    You can contact your hosting company and ask why are they rejecting these addresses.

    Thread Starter cutu234

    (@cutu234)

    Thanks for the reply. I’v just tested it on the same server and same WordPress installation using the Newsleter plugin by Satollo. No problems whatsoever. All emails were sent, and the invalid email was ignored. So, this is obviously NOT an issue on the server side. It is a Mailpoet issue. And honestly, it’s a pretty nasty one.

Viewing 2 replies - 1 through 2 (of 2 total)
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