WP Forms stopped sending notifications

Hi

I have put the link to my site but I haven’t launched yet so you won’t be able to see it.

I added a WP Form to my contact page and configured an SMTP plugin (I used WP Mail SMTP). I tried sending one message to myself from my site putting the same email address that my account is attached to in the email box and it worked – it came through. However, I then tried sending another message using a different email address and it didn’t come through. I tried several times and have given it over 24 hours to see if anything turned up. I notice now that I have this message on my dashboard from WP Forms but I don’t really know what to do about it or what it means:

MAIL DELIVERY ERROR: the plugin WP Mail SMTP v2.5.1 logged this error during the last time it tried to send an email:

Mailer: Other SMTP
SMTP Error: data not accepted.
Consider running an email test after fixing it.

Any ideas?

Thank you,

Katherine

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