MyBB Community Forums

my have set my forum to default email subscribe on thread.
it is working fine but today i am getting following error when my forum try to send email to users


Could not deliver message to the following recipient(s):

Failed Recipient: [email protected]
Reason: Remote host said: 421 4.7.0 to review our Bulk Email Senders Guidelines. 30si5068630anp.124

any idea???????

Well, looking at the message it looks like gmail has blocked mail from your domain or the host. If you have a gmail account try sending a single email to yourself from the forum and see what you get.