Undeliverable Emails for my newsletter?

I have a welcome newsletter that is supposed to give a gift to the subscriber. I have gotten 8 messages like the following within the last few days. What is going on?

This is the mail system at host gateway21.websitewelcome.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

<-----------@yahoo.com>: delivery temporarily suspended: lost connection with
mta7.am0.yahoodns.net[66.196.118.35] while sending RCPT TO

Final-Recipient: rfc822; -------------@yahoo.com
Action: failed
Status: 4.4.2
Diagnostic-Code: X-Postfix; delivery temporarily suspended: lost connection
with mta7.am0.yahoodns.net[66.196.118.35] while sending RCPT TO

  • Meredith

    Hey, I've tried updating and still have this issue. It seems to bounce every time someone subscribes with a Yahoo email address.

    I'm sorry to have to inform you that your message could not
    be delivered to one or more recipients. It's attached below.

    For further assistance, please send mail to postmaster.

    If you do so, please include this problem report. You can
    delete your own text from the attached returned message.

    The mail system

    <__________@yahoo.com>: delivery temporarily suspended: lost connection
    with mta7.am0.yahoodns.net[98.138.112.38] while sending RCPT TO

    Final-Recipient: rfc822;_________@yahoo.com
    Original-Recipient: rfc822;_____________@yahoo.com
    Action: failed
    Status: 4.4.2
    Diagnostic-Code: X-Postfix; delivery temporarily suspended: lost connection
    with mta7.am0.yahoodns.net[98.138.112.38] while sending RCPT TO

  • Sajid

    Hi @Meredith,

    Hope you are doing good today :slight_smile:

    It appears to be issue with yahoo mail server that is declining emails from your server. I tested with yahoo email address but did not get any email, then I went ahead and subscribed with Gmail email and got the welcome email instantly, as seen in attached screenshot.

    I also find similar thread on other forum having exact same issue and receiving emails from yahoo postmaster.

    I remember an other member having similar issue (Subscribe By Email plugin) where only self hosted emails were not delivering that ended up using Easy WP SMTP plugin.

    Did you tried using Gmail SMTP credentials for out going emails ? Also if its okay for you then please grant support staff access so I can take a closer look.

    Take care and have a nice day :slight_smile:

    Kind Regards,
    Sajid J

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