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Topic: Helo command rejected: Host not found

==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1
- Deployed with iRedMail Easy or the downloadable installer?Downloadable Installer
- Linux/BSD distribution name and version: Debian 10
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx):Nginx
- Manage mail accounts with iRedAdmin-Pro?IReadAdmin-Pro
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Hello

How I can permit this email


Thanks for your help

Dec 16 13:58:42 mail001 postfix/smtpd[25840]: NOQUEUE: reject: RCPT from unknown[181.60.62.80]: 450 4.1.8 <root@proxmoxdev.red>: Sender address rejected: Domain not found; from=<root@proxmoxdev.red> to=<ee@XXX.com> proto=ESMTP helo=<proxmoxdev.red>
Dec 16 13:58:42 mail001 postfix/smtpd[25840]: disconnect from unknown[181.60.62.80] ehlo=1 mail=1 rcpt=0/1 data=0/1 rset=1 quit=1 commands=4/6

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Re: Helo command rejected: Host not found

Add one line in /etc/postfix/helo_access.pcre:

/^proxmoxdev\.red$/ OK

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