Saving Postfix configuration gives error


When I try to save my postfix configuration, I get this error: fatal: bad string length 0 < 1: mynetworks_style

/etc/postfix/ does contain a value for myhostname



Fixed this issue, by adding mynetworks_style = host to Postfix

Howdy -- we're glad you got it working, thanks for letting us know how you fixed that!

Is there any chance you could share what your /etc/postfix/ looks like? We'd like to see if there's anything we could do to prevent the error you saw. Thanks!

Sure :-)

Here's the content of my I manually added mynetworks_style = host as mentioned

# See /usr/share/postfix/ 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/postfix/postfix.cert.pem
smtpd_tls_key_file = /etc/postfix/postfix.key.pem
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 = cp1.mydomain
mynetworks_style = host
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = $myhostname, cp1.mydomain, localhost.mydomain, localhost
relayhost =
mynetworks = [::ffff:]/104 [::1]/128
mailbox_command = /usr/bin/procmail-wrapper -o -a $DOMAIN -d $LOGNAME
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all
virtual_alias_maps = hash:/etc/postfix/virtual
sender_bcc_maps = hash:/etc/postfix/bcc
sender_dependent_default_transport_maps = hash:/etc/postfix/dependent
home_mailbox = Maildir/
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination
allow_percent_hack = no
smtpd_client_restrictions = reject_unknown_reverse_client_hostname reject_rbl_client reject_rbl_client reject_rbl_client
milter_default_action = accept
milter_protocol = 2
smtpd_milters = local:/var/run/milter-greylist/milter-greylist.sock
non_smtpd_milters = local:/var/run/milter-greylist/milter-greylist.sock
smtpd_tls_CAfile = /etc/postfix/
smtpd_tls_security_level = may
smtpd_tls_mandatory_protocols = SSLv3, TLSv1
smtpd_tls_mandatory_ciphers = high

I added the string as above exactly, then restarted postfix service with "service postfix restart". I tried to save the configuration page yet this error persists.

Email complexity is THE main reason I am using a control panel. If it will not make life easier for that I don't need it.

thomnet, it looks like you're using Virtualmin GPL there.

What you may want to do is start a new Forum thread, and there, post the output of "postconf -n".

That output can be used to determine the cause of that particular issue.