My organization does not have an IT professional or web developer, so any help on the following issue is appreciated! Our website DNS host is Business Catalyst and our email server is Office 365 AND we use Constant Contact for some of our email newsletters. Since early July, our employees have not been receiving Constant Contact emails and Constant Contact returned this message to our inquiry:
"It appears that the entity that hosts DNS for this domain, Adobe Catalyst, has a block on CTCT's DNS caching servers...Note that this is not an email issue per se (blacklists, rate limiting, spam filtering, etc. will not be in play here), this is happening north of mail and SMTP, at the DNS level. Each attempt we make to deliver any mail to this domain is met with a "Host or domain name not found." I confirmed the block by attempting to resolve DNS for this domain directly from one of our DNS caching servers and each of my attempts are timing out."
Does anyone know of a way to "un-block" Constant Contact? Also, this did start after we upgraded our office server computer although I'm not sure that that's pertinent.
thank you!