# recherche d'un utilisateur :

```
USER=gnunux@gnunux.info
su - postfix -s /bin/bash -c "postmap -q $USER ldap:/etc/postfix/ldapsource.cf"
```
Doit retourner le nom de l'utilisateur.

Il est possible de demander le mode verbeux :

```
su - postfix -s /bin/bash -c "postmap -vq $USER ldap:/etc/postfix/ldapsource.cf"
```

# Test with telnet

EHLO root.gnunux.info
[..]
250-AUTH PLAIN LOGIN
[..]
MAIL FROM:<gnunux@gnunux.info>
RCPT TO:<contact@silique.fr>
DATA
To:<gnunux@gnunux.info>
From:<gnunux@gnunux.info>
Subject:SMTP Test
This is a test message

.

# auth with telnet

echo -ne '\000gnunux@gnunux.info\000password' | openssl base64
openssl s_client -connect 192.168.45.13:25 -starttls smtp
EHLO client.example.com
[..]
AUTH PLAIN AGdudW51eEBnbnVudXguaW5mbwBxVV96Vl9kbEUzUm82WmpTcjFHOGNzbmd4ajA=
235 2.7.0 Authentication successful

# Un élément de configuration

postconf maillog_file

# Editer la configuration

postconf maillog_file=/dev/stdout

# Test mail en ligne

https://www.mail-tester.com/
https://dkimvalidator.com/

# debug mail :

journalctl -m -u postfix -g address mail
# get date
journalctl -m -u postfix --since "2022-07-31 23:14:04"