If you’re trying to send mail to an Office 365 recipient and the mail has been rejected because of your…
Below are listed cPanel and other ports for server administration. cPanel cPanel 2082 cPanel – SSL 2083 WHM 2086 WHM…
A good way to check the connectons to mail ports is to use netstat: # netstat -anp | grep :25…
DKIM on Postfix: https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-dkim-with-postfix-on-debian-wheezy The configuration can be tested by sending an empty email to check-auth@verifier.port25.com and a reply will…
Basics rDNS (Reverse DNS) The Reverse DNS for an IP should be set to the EHLO value that is sent…
Amazonon DMARC (http://sesblog.amazon.com/post/Tx22ZELXSSZRYZR/What-is-DMARC-and-should-you-use-it). This Google article is also helpful: https://support.google.com/a/answer/2466563?hl=en If you scroll down to the ‘Example records’ section, you’ll…
Add the clean IP to the server. Edit the firewall to NAT all connections FROM port 25 to use the…
Normally, checking mail may produce an SSL error for plesk mail services. All clients Outlook, Mac mail, thunderbird, show a…
Check the header of an email X-Spam-Status: No, score=0.1 X-Spam-Score: 1 X-Spam-Bar: / X-Ham-Report: Spam detection software, running on the…
For a plesk server IMAP Incomming server Server: mail.domain.com Connection security: none Authentication: Password, transmitted insecurely User Name: user@domain.com Port:…