Postfix is different inside than outside?

You are able to make a connection so it isnt a firewall issue.

Can you run 'postconf -n' and post the output here.

some guy here had the same problem: http://archives.neohapsis.com/archives/postfix/2005-02/thread.html#706

There's a thread called: "EHLO command not implemented from external connections "

I suppose it could be a firewall issue if from outside you are being redirected to an incorrect server.

root@SFTSRVDB01:/etc/postfix# postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
config_directory = /etc/postfix
home_mailbox = Maildir/
inet_interfaces = all
inet_protocols = all
mailbox_command =
mailbox_size_limit = 0
mydestination = mail.domain.com, localhost
myhostname = mail.domain.com
mynetworks = 127.0.0.0/8
myorigin = $mydomain
recipient_delimiter = +
relayhost =
smtp_tls_session_cache_database = btree:${queue_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain =
smtpd_sasl_security_options =
smtpd_tls_auth_only = no
smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_session_cache_database = btree:${queue_directory}/smtpd_scache
smtpd_use_tls = yes
virtual_alias_domains = domain.com
virtual_alias_maps = hash:/etc/postfix/virtual


Yes the server is behind a Cisco Firewall (PIX OS)..
I'll have a look at it then!

Thanks a lot for the suggestions.

ok, it was really the Cisco..

I gave 400 points for grblades for the right answer and 100 points for Cyclops3590 for the right command, only "protocol" was missing..

Thanks both ;)