i am getting the following error when I am trying to receive an eMail.
550 5.7.1 Recipient address rejected: Mail appeared to be SPAM or forged. Ask you Mail / DNS Administrator to correct HELO and DNS MX settings or to get removed from DNSBLs: Please relay via you ISP xxx.de. Error timeout exceeded.
I think the HELO adress is not correct or blocked.
Is there a HELO checking for Domains? How can I deactive HELO checking?
I found out that there is a Greylisting too. Is there any possibility how i can check all AntiSpam Options of imscp or am I complete wrong and the error message shown above is something else?