Update postfix/main.cf

postfix/main.cf

@@ -5,7 +5,9 @@ maillog_file = /var/log/mail.log
 # Text that follows the 220 code in the SMTP server's greeting banner.
 # You MUST specify $myhostname at the start due to an RFC requirement.
 smtpd_banner = $myhostname ESMTP $mail_name (Debian)
+
 myorigin = /etc/mailname
+myhostname = mx.tobiastime.xyz
 
 # IP protocols to use: ipv4, ipv6, or all
 # (set this explicitly so `post-install upgrade-configuration' wont complain)
@@ -42,7 +44,7 @@ cyrus_sasl_config_path = /etc/postfix/sasl
 # SMTP server RSA key and certificate in PEM format
 # enter the actual path
 smtpd_tls_key_file = /path/2/privkey.pem
-smtpd_tls_cert_file = /path/2/cert.pem
+smtpd_tls_cert_file = /path/2/fullchain.pem
 # SMTP Server security level: none|may|encrypt
 smtpd_tls_security_level = may
 
@@ -62,7 +64,6 @@ smtpd_tls_auth_only = yes
 smtpd_tls_loglevel = 1
 smtpd_tls_received_header = yes
 
-myhostname = mx.tobiastime.xyz
 smtp_dns_support_level = dnssec
 
 milter_default_action = accept