(SASL authentication failed; server relay.dynu.com[199.233.237.19] said: 535 Authentication failed. Restarting authentication process.)

# See /usr/share/postfix/main.cf.dist for a commented, more complete version





# Debian specific:  Specifying a file name will cause the first

# line of that file to be used as the name.  The Debian default

# is /etc/mailname.

#myorigin = /etc/mailname



smtpd_banner = $myhostname ESMTP $mail_name (Raspbian)

biff = no



# appending .domain is the MUA's job.

append_dot_mydomain = no



# Uncomment the next line to generate "delayed mail" warnings

#delay_warning_time = 4h



readme_directory = no



# See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on

# fresh installs.

compatibility_level = 2



# TLS parameters

#smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem

#smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key

smtpd_tls_cert_file=/etc/letsencrypt/live/mail.mydomain.com/fullchain.pem

smtpd_tls_key_file=/etc/letsencrypt/live/mail.mydomain.com/privkey.pem

smtpd_use_tls=yes

smtpd_use_auth_only = yes

smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache

smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache



smtpd_sasl_type = dovecot

smtpd_sasl_path = private/auth

smtpd_sasl_auth_enable = yes





smtpd_recipient_restrictions =

          permit_sasl_authenticated,

          permit_mynetworks,

          reject_unauth_destination



## DYNU



smtp_sasl_auth_enable = yes

smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd

smtp_sasl_security_options =



# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for

# information on enabling SSL in the smtp client.



smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination

#myhostname = tilleys.mydomain.com

myhostname = mail.mydomain.com

alias_maps = hash:/etc/aliases

alias_database = hash:/etc/aliases

myorigin = /etc/mailname

mydestination = $myhostname, localhost.localdomain, localhost, mail.mydomain.com

#mydestination = localhost

relayhost = [relay.dynu.com]:26

smtp_generic_maps = hash:/etc/postfix/generic

mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128

mailbox_size_limit = 0

recipient_delimiter = +

inet_interfaces = all

inet_protocols = all





#Handing off local delivery to Dovecot's LMTP, and telling it where to store mail

virtual_transport = lmtp:unix:private/dovecot-lmtp



#Virtual domains, users, and aliases

virtual_mailbox_domains = mysql:/etc/postfix/mysql-virtual-mailbox-domains.cf

virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual-mailbox-maps.cf

virtual_alias_maps = mysql:/etc/postfix/mysql-virtual-alias-maps.cf

relay.dynu.com          relay@relay.mydomain.com:Password

miked@mydomain           miked@mydomain.com

miked@mydomain.com      miked@mydomain.com



root@mydomain              miked@mydomain.com

root@mydomain.com          miked@mydomain.com