*) iRedMail (Postfix) rejects this email because the Verizon SMTP server sent an invalid HELO identity.
*) Default HELO restrictions are listed in /etc/postfix/helo_access.pcre. You can check which one matches the Verizon one (find it in mail log), then comment out it and reload Postfix service to fix it.
↧
Re: Whitelisting SMTP server on known blacklist.
↧