Why is my email being marked as Spam
In order to help combat the ever increasing amount of Spam being sent, many third-party mailserver sites have implemented mail policies based on DMARC (Domain-based Message Authentication, Reporting, & Conformance). Gmail and Yahoo have implemented especially strict DMARC polices, which can cause issues with people receiving mail from you if you are not configured properly.
DMARC is basically a DNS record which specifies how your mail should be handled by third-party mail servers. If you do not have a DMARC record, many third party mail servers may automatically mark your mail as Spam, whether it is legitimate or not.
In order to have the best chance of your mail to be delivered successfully, you will want to make sure that you have valid SPF, DKIM and DMARC records set up. The following Knowledgebase articles will help you configure these records.
Configuring SPF and DKIM:
https://kb.acenet.us/How_to_enable_Email_Authentication
How to configure your DMARC record:
https://kb.acenet.us/DMARC
If you have any questions, or need assistance with setting these up, please login to our online Helpdesk and open a new technical support ticket.