Ryfujk

Here is a basic example of a telnet example to my server:

[arch@myhost ~]$ telnet mydomain.com 25

Trying 192.168.1.25...

Connected to mydomain.com.

Escape character is '^]'.

220 mydomain.mydomain.com ESMTP Postfix (Ubuntu)

ehlo mydomain.com

250-mydomain.mydomain.com

250-PIPELINING

250-SIZE 10240000

250-VRFY

250-ETRN

250-AUTH PLAIN LOGIN

250-AUTH=PLAIN LOGIN

250-ENHANCEDSTATUSCODES

250-8BITMIME

250 DSN

mail from: user1@mydomain.com

250 2.1.0 Ok

rcpt to: user2@mydomain.com

250 2.1.5 Ok

data

354 End data with <CR><LF>.<CR><LF>

test

.

250 2.0.0 Ok: queued as 9D9AE6252B

quit

221 2.0.0 Bye

Connection closed by foreign host.

My postfix configurations

/etc/postix/main.cf

# 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 (Ubuntu)

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



# 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_use_tls = no

smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache

smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache



# 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 = mydomain.mydomain.com

alias_maps = hash:/etc/aliases

alias_database = hash:/etc/aliases

myorigin = /etc/hostname

mydestination = localhost

relayhost = 

mynetworks = 127.0.0.0/8

mailbox_size_limit = 0

recipient_delimiter = +

inet_interfaces = all

inet_protocols = all

home_mailbox = Maildir/

mailbox_command = 

smtpd_recipient_restrictions = check_sender_access hash:/etc/postfix/sender_checks, check_client_access cidr:/etc/postfix/blacklist_cidr,check_client_access hash:/etc/postfix/blacklist,reject_unknown_recipient_domain,reject_non_fqdn_recipient, reject_unlisted_recipient,permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination

smtpd_helo_required = yes

smtpd_helo_restrictions = permit_mynetworks,permit_sasl_authenticated,check_helo_access pcre:/etc/postfix/helo_access.pcre

smtpd_sender_restrictions = reject_unknown_sender_domain,reject_non_fqdn_sender,reject_unlisted_sender,reject_sender_login_mismatch,permit_sasl_authenticated,permit_mynetworks,check_sender_access pcre:/etc/postfix/sender_access.pcre

smtpd_data_restrictions = reject_unauth_pipelining

smtpd_sasl_type = dovecot

smtpd_sasl_path = private/auth

smtpd_sasl_auth_enable = yes

broken_sasl_auth_clients = yes

smtpd_sasl_security_options = noanonymous

smtpd_sasl_local_domain = 

smtpd_reject_unlisted_recipient = yes

smtpd_reject_unlisted_sender = no

header_checks = regexp:/etc/postfix/header_checks

body_checks = pcre:/etc/postfix/body_checks.pcre

virtual_mailbox_base = /home/vmail

virtual_alias_maps = proxy:mysql:/etc/postfix/postfix-db/virtual_alias_maps.cf

virtual_mailbox_domains = proxy:mysql:/etc/postfix/postfix-db/virtual_mailbox_domains.cf

virtual_mailbox_maps = proxy:mysql:/etc/postfix/postfix-db/virtual_mailbox_maps.cf

virtual_transport = virtual

local_transport = virtual

virtual_minimum_uid = 5000

virtual_uid_maps = static:5000

virtual_gid_maps = static:5000

/etc/postfix/master.cf

#

# Postfix master process configuration file.  For details on the format

# of the file, see the master(5) manual page (command: "man 5 master" or

# on-line: http://www.postfix.org/master.5.html).

#

# Do not forget to execute "postfix reload" after editing this file.

#

# ==========================================================================

# service type  private unpriv  chroot  wakeup  maxproc command + args

#               (yes)   (yes)   (no)    (never) (100)

# ==========================================================================

smtp      inet  n       -       y       -       -       smtpd

#smtp      inet  n       -       y       -       1       postscreen

#smtpd     pass  -       -       y       -       -       smtpd

#dnsblog   unix  -       -       y       -       0       dnsblog

#tlsproxy  unix  -       -       y       -       0       tlsproxy

submission inet n       -       n       -       -       smtpd

  -o smtpd_sasl_auth_enable=yes

  -o smtpd_sasl_type=dovecot

  -o smtpd_sasl_path=private/auth

  -o smtpd_sasl_security_options=noanonymous

  -o smtpd_sasl_local_domain=$myhostname

  -o smtpd_client_restrictions=permit_sasl_authenticated,reject

  -o smtpd_sender_login_maps=hash:/etc/postfix/virtual

  -o smtpd_sender_restrictions=reject_sender_login_mismatch

  -o smtpd_recipient_restrictions=reject_unknown_recipient_domain,permit_sasl_authenticated,reject

..........................

Relevant dovecot configuration

service auth {



  unix_listener /var/spool/postfix/private/auth {

    mode  = 0666

    user  = postfix

    group = postfix

  }



  unix_listener auth-master {

    mode = 0666

    user = vmail

    group = vmail

  }



  unix_listener auth-userdb {

    mode = 0660

    user = vmail

    group = vmail

  }



}

Some logs with no errors

Mar  3 15:20:01 mydomain postfix/smtpd[1527]: 9D9AE6252B: client=unknown[192.168.1.2]

Mar  3 15:20:08 mydomain postfix/cleanup[1533]: 9D9AE6252B: message-id=<>

Mar  3 15:20:08 mydomain postfix/qmgr[1354]: 9D9AE6252B: from=<user1@mydomain.com>, size=189, nrcpt=1 (queue active)

Mar  3 15:20:08 mydomain postfix/virtual[1534]: 9D9AE6252B: to=<user2@mydomain.com>, relay=virtual, delay=21, delays=21/0.02/0/0.25, dsn=2.0.0, status=sent (delivered to maildir)

Mar  3 15:20:08 mydomain postfix/qmgr[1354]: 9D9AE6252B: removed

Mar  3 15:20:12 mydomain postfix/smtpd[1527]: disconnect from unknown[192.168.1.2] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5