What does this error message mean?
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<mail.companywebsite.com #5.7.1 smtp;554 5.7.1 The server sending your mail [xx.xxx.xx.197] does not have a reverse DNS entry. Connection Rejected. Please contact your Dial-Up/DSL/Network ISP Provider. Default Reject!>
Does it mean there is no reverse DNS entry for this company's main domain or no reverse DNS entry for something else? Also, where does the reverse DNS entry need to be created, in the sending company's DNS server(s) or someone else's DNS server? Thanks.