postfix won't deliver-Collection of common programming errors

I have been setting up an email server based on this tutorial on ubuntu 12.04 with MySQL virtualuser. After having problems with postgray I’m again in that situation that I don’t know where should I search to debug my problem properly. Sending email from my servers mailbox to another account is working, for example Gmail. If I answer on than it is not going to be delivered. MAILER-DAEMON is returning the following unknown user: “myname”. the mail.err on dovecot restart

Jan 22 10:54:41 h2004156 dovecot: imap-login: Error: read(anvil) failed: EOF
Jan 22 10:54:41 h2004156 last message repeated 2 times
Jan 22 10:54:41 h2004156 dovecot: auth: Error: read(anvil-auth-penalty) failed: EOF
Jan 22 10:54:41 h2004156 dovecot: auth: Error: net_connect_unix(anvil-auth-penalty) failed: Permission denied

I have been checking my dovecote-sql.conf.ext everything seems to be all right, the driver is set it to mysql, the user and password queries are there. Maybe here should be somehow checked if the queries are working.

The mail log shows

Jan 22 00:00:35 h2004156 postfix/qmgr[6881]: DBBC346CE839: from=, size=1887, nrcpt=1 (queue active)
Jan 22 00:00:35 h2004156 postfix/local[7701]: warning: dict_nis_init: NIS domain name not set - NIS lookups disabled
Jan 22 00:00:35 h2004156 amavis[7675]: (07675-01) Passed CLEAN, [74.125.83.43]  -> , Message-ID: , mail_id: K2Wo7uN7Xmlf, Hits: 1.31, size: 1424, queued_as: DBBC346CE839, 1686 ms
Jan 22 00:00:35 h2004156 postfix/smtp[7696]: 249DD46CE833: to=, relay=127.0.0.1[127.0.0.1]:10024, delay=1.9, delays=0.18/0.02/0.01/1.7, dsn=2.0.0, status=sent (250 2.0.0 from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as DBBC346CE839)
Jan 22 00:00:35 h2004156 postfix/qmgr[6881]: 249DD46CE833: removed

postfix/main.cf

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

# The first text sent to a connecting process.
smtpd_banner = $myhostname ESMTP $mail_name
biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
readme_directory = no

# SASL parameters
# ---------------------------------

# Use Dovecot to authenticate.
smtpd_sasl_type = dovecot
# Referring to /var/spool/postfix/private/auth
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_sasl_authenticated_header = yes

# TLS parameters
# ---------------------------------

# Replace this with your SSL certificate path if you are using one.
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
# The snakeoil self-signed certificate has no need for a CA file. But
# if you are using your own SSL certificate, then you probably have
# a CA certificate bundle from your provider. The path to that goes
# here.
#smtpd_tls_CAfile=/path/to/ca/file
smtpd_use_tls=yes
smtp_tls_security_level = may
smtpd_tls_security_level = may
#smtpd_tls_auth_only = no
smtp_tls_note_starttls_offer = yes
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_timeout = 3600s
tls_random_source = dev:/dev/urandom
#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 parameters
# ---------------------------------

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
# will it be a permanent error or temporary
unknown_local_recipient_reject_code = 450
# how long to keep message on queue before return as failed.
# some have 3 days, I have 16 days as I am backup server for some people
# whom go on holiday with their server switched off.
maximal_queue_lifetime = 7d
# max and min time in seconds between retries if connection failed
minimal_backoff_time = 1000s
maximal_backoff_time = 8000s
# how long to wait when servers connect before receiving rest of data
smtp_helo_timeout = 60s
# how many address can be used in one message.
# effective stopper to mass spammers, accidental copy in whole address list
# but may restrict intentional mail shots.
smtpd_recipient_limit = 16
# how many error before back off.
smtpd_soft_error_limit = 3
# how many max errors before blocking it.
smtpd_hard_error_limit = 12

# This next set are important for determining who can send mail and relay mail
# to other servers. It is very important to get this right - accidentally producing
# an open relay that allows unauthenticated sending of mail is a Very Bad Thing.
#
# You are encouraged to read up on what exactly each of these options accomplish.

# Requirements for the HELO statement
smtpd_helo_restrictions = permit_mynetworks, warn_if_reject reject_non_fqdn_hostname, reject_invalid_hostname, permit
# Requirements for the sender details
smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks, warn_if_reject reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unauth_pipelining, permit
# Requirements for the connecting server
smtpd_client_restrictions = reject_rbl_client sbl.spamhaus.org, reject_rbl_client blackholes.easynet.nl, reject_rbl_client dnsbl.njabl.org
# Requirement for the recipient address. Note that the entry for
# "check_policy_service inet:127.0.0.1:10023" enables Postgrey.
smtpd_recipient_restrictions = reject_unauth_pipelining, permit_mynetworks, permit_sasl_authenticated, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unauth_destination, check_policy_service inet:[::1]:10023, permit
smtpd_data_restrictions = reject_unauth_pipelining

# require proper helo at connections
smtpd_helo_required = yes
# waste spammers time before rejecting them
smtpd_delay_reject = yes
disable_vrfy_command = yes

# General host and delivery info
# ----------------------------------

myhostname = panama-verlag.de
myorigin = /etc/hostname
# Some people see issues when setting mydestination explicitly to the server
# subdomain, while leaving it empty generally doesn't hurt. So it is left empty here.
# mydestination = mail.example.com, localhost
mydestination = panama-verlag.de
# If you have a separate web server that sends outgoing mail through this
# mailserver, you may want to add its IP address to the space-delimited list in
# mynetworks, e.g. as 111.222.333.444/32.
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
mynetworks_style = host

# This specifies where the virtual mailbox folders will be located.
virtual_mailbox_base = /var/vmail
# This is for the mailbox location for each user. The domainaliases
# map allows us to make use of Postfix Admin's domain alias feature.
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf, mysql:/etc/postfix/mysql_virtual_mailbox_domainaliases_maps.cf
# and their user id
virtual_uid_maps = static:150
# and group id
virtual_gid_maps = static:8
# This is for aliases. The domainaliases map allows us to make
# use of Postfix Admin's domain alias feature.
virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf, mysql:/etc/postfix/mysql_virtual_alias_domainaliases_maps.cf
# This is for domain lookups.
virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf

# Integration with other packages
# ---------------------------------------

# Tell postfix to hand off mail to the definition for dovecot in master.cf
virtual_transport = dovecot
dovecot_destination_recipient_limit = 1

# Use amavis for virus and spam scanning
content_filter = amavis:[127.0.0.1]:10024

# Header manipulation
# --------------------------------------

# Getting rid of unwanted headers. See: https://posluns.com/guides/header-removal/
header_checks = regexp:/etc/postfix/header_checks
# getting rid of x-original-to
enable_original_recipient = no

if I check the mysql query with postmap -q [email protected] mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf than it’s returning the user like

 mydomain.com/test

Originally posted 2013-11-28 10:12:29.