Topic: Inexplicable Access Deny
iRedMail version: 1.3.1, CentOS 7.9, LDAP, Nginx, iRedAdmin-Pro
We cannot receive mail from ONE client, got
NOQUEUE: reject: RCPT from XXXX: 554 5.7.1 <XXXX>: Client host rejected: Access denied; from=<XXXX> to=<XXXX> proto=ESMTP helo=<XXXX>
Server works for years without any problems.
Pass for arch: 123
We have black/grey list but sender ip/domain not in it.
----Spider Email Archiver: On-Premises, lightweight email archiving software developed by iRedMail team. Supports Amazon S3 compatible storage and custom branding.