## RESULT of "dpkg-reconfigure postfix"
####
myorigin = /etc/mailname
mydestination = $myhostname, localhost.$mydomain, localhost
relayhost = smtp.sendgrid.net:587
mynetworks = 127.0.0.0/8 172.31.1.0/24 [::1]/128 [2a01:4f8:c0c:3789::]/64 [fe80::]/64
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all

## GroupServer config
####
alias_maps = hash:/etc/aliases,hash:/etc/postfix/groupserver.aliases
alias_database = hash:/etc/aliases,hash:/etc/postfix/groupserver.aliases
virtual_alias_maps = hash:/etc/postfix/groupserver.virtual
smtpd_authorized_verp_clients = 127.0.0.1,localhost

## sendgrid config
####
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_sasl_tls_security_options = noanonymous
smtp_tls_security_level = encrypt
header_size_limit = 4096000#

Nov  2 11:15:54 sawiya postfix/smtpd[8247]: connect from mout.gmx.net[212.227.17.20]
Nov  2 11:15:54 sawiya postfix/trivial-rewrite[8156]: warning: do not list domain gs.lebenszeit.sawiya.de in BOTH virtual_alias_domains and relay_domains
Nov  2 11:15:54 sawiya postfix/smtpd[8247]: A3155616EE: client=mout.gmx.net[212.227.17.20]
Nov  2 11:15:54 sawiya postfix/cleanup[8157]: A3155616EE: message-id=<21f76deb-e6f6-4543-c8ad-d586e1f27b17@gmx.de>
Nov  2 11:15:54 sawiya postfix/smtpd[8247]: disconnect from mout.gmx.net[212.227.17.20] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5
Nov  2 11:15:54 sawiya postfix/qmgr[8151]: A3155616EE: from=<s.horner@gmx.de>, size=2230, nrcpt=1 (queue active)
Nov  2 11:15:55 sawiya postfix/smtpd[8247]: connect from ip6-localhost[::1]
Nov  2 11:15:55 sawiya postfix/local[8158]: A3155616EE: to=<groupserver-automagic@localhost.de>, orig_to=<angebote-an-alle@gs.lebenszeit.sawiya.de>, relay=local, delay=1.1, delays=0.09/0/0/1, dsn=2.0.0, status=sent (delivered to command: /var/www/html/lebenszeit/groups/bin/smtp2gs http://gs.lebenszeit.sawiya.de)
Nov  2 11:15:55 sawiya postfix/qmgr[8151]: A3155616EE: removed

Nov  2 11:11:56 sawiya postfix/smtpd[8153]: connect from mail-pf0-f169.google.com[209.85.192.169]
Nov  2 11:11:57 sawiya postfix/trivial-rewrite[8156]: warning: do not list domain gs.lebenszeit.sawiya.de in BOTH virtual_alias_domains and relay_domains
Nov  2 11:11:57 sawiya postfix/smtpd[8153]: 2AEE1616EE: client=mail-pf0-f169.google.com[209.85.192.169]
Nov  2 11:11:57 sawiya postfix/cleanup[8157]: 2AEE1616EE: message-id=<CA+wR9DScGV=kKOnH8EBBfwgU5xeTbLhHZc5theY_-gwjXJL0cQ@mail.gmail.com>
Nov  2 11:11:57 sawiya postfix/qmgr[8151]: 2AEE1616EE: from=<shornered@googlemail.com>, size=2786, nrcpt=1 (queue active)
Nov  2 11:11:57 sawiya postfix/smtpd[8153]: disconnect from mail-pf0-f169.google.com[209.85.192.169] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5
Nov  2 11:11:57 sawiya postfix/local[8158]: 2AEE1616EE: to=<groupserver-automagic@localhost.de>, orig_to=<angebote-an-alle@gs.lebenszeit.sawiya.de>, relay=local, delay=0.52, delays=0.2/0.01/0/0.32, dsn=4.5.0, status=deferred (Error communicating with the server while processing the message: Internal Server Error (500 <gs.lebenszeit.sawiya.de>) )