Optonline email addresses bounced

New Member

Optonline email addresses bounced

I have noticed that all my optonline.net email addresses have been bounced IN THE PAST 2 WEEKS ONLY  before that they went through fine, can you help me understand why please


CTCT Employee

Re: Optonline email addresses bounced

RobinS574 Hello and thank you for reaching out to the Community!  If all the contacts with that domain (@optonline.net) are bouncing, there could be something on their end blocking your campaigns from going through. This could have happened due to a change or update on their network. You’ll want to make sure Constant Contact is still Whitelisted as a safe sender for their domain. If you still need assistance in this matter you can also reach out to our team in Deliverability.

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