[Postfixbuch-users] Hat Postfix probleme mit Exchange Server? "lost connection with "while sending MAIL FROM)

[Thomas Vogt]

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Hallo

Sind Probleme bekannt im Zusammenspiel zwischen Postfix und Exchange 2000?

Fehler:
Nov 28 13:17:56 mail04 postfix/smtp[22729]: 355AD72F49:
to=<info at xxxx.xx>, relay=mail.xxxx.xx[1.1.1.1.]:25,
delay=1, delays=1/0.03/0.24/0.22, dsn=4.4.2, status=deferred
(lost connection with mail.xxxx.xx[1.1.1.1] while sending MAIL
FROM)

In der FAQ steht, dass solche Probleme mit einer PIX oder mit einer
falschen MTU zu tun haben koennte. Ich habe deshalb die MTU Size auf
1468 gesetzt zum Testen. Hat aber nichts bewirkt.  Ich hab keinen
Zugriff auf den Remote Server (Exchange)

Das Problem taucht nur mit Postfix auf. Benutzt man Sendmail zum Senden
klappt es. Der Server auf der Gegenstelle (Exchange) hat keinen load und
Antwortet schnell. Postfix laeuft ansonsten ohne Probleme nur mit diesem
einen Exchange Server nicht. Da jedoch Sendmail ohne Probleme Emails
senden kann, kann es weniger am Server selber liegen.

Meine Einstellungen:
postfix-2.4.5

postconf -n (IP informationen habe ich entfernt)
address_verify_sender = <>
alias_database = hash:/etc/mail/aliases
alias_maps = hash:/etc/mail/aliases
body_checks = pcre:/usr/local/etc/postfix/body_checks
bounce_queue_lifetime = 2
bounce_template_file = /usr/local/etc/postfix/bounce-templates/bounce.de.cf
broken_sasl_auth_clients = yes
command_directory = /usr/local/sbin
config_directory = /usr/local/etc/postfix
content_filter = lmtp-amavis:[127.0.0.1]:10024
daemon_directory = /usr/local/libexec/postfix
debug_peer_level = 3
default_process_limit = 500
delay_warning_time = 24h
disable_vrfy_command = yes
header_checks = regexp:/usr/local/etc/postfix/header_checks
html_directory = no
lmtp_destination_concurrency_limit = 5
lmtp_sasl_auth_enable = yes
lmtp_sasl_password_maps = hash:/usr/local/etc/postfix/lmtp_password_map
lmtp_sasl_security_options = noanonymous
lmtp_tcp_port = 2003
local_recipient_maps = ldap:ldaplocalrecipients
mail_owner = postfix
mailq_path = /usr/local/bin/mailq
manpage_directory = /usr/local/man
maps_rbl_reject_code = 550
maximal_queue_lifetime = 5d
message_size_limit = 20480000
mydestination = mail.yyyy.yy
myorigin = $mydomain
newaliases_path = /usr/local/bin/newaliases
queue_directory = /var/spool/postfix
readme_directory = no
sample_directory = /usr/local/etc/postfix
sendmail_path = /usr/local/sbin/sendmail
setgid_group = maildrop
smtp_tls_note_starttls_offer = yes
smtpd_banner = $myhostname
smtpd_client_restrictions = permit_sasl_authenticated
smtpd_etrn_restrictions = reject
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks     reject_invalid_hostname
smtpd_recipient_limit = 104
smtpd_recipient_restrictions = reject_unlisted_recipient
check_recipient_access hash:/usr/local/etc/postfix/access
permit_mynetworks        permit_sasl_authenticated        reject_inv
alid_hostname        reject_non_fqdn_hostname
reject_non_fqdn_recipient        reject_non_fqdn_sender
reject_unknown_sender_domain         reject_unknown_recipient_domain
     reje
ct_unknown_recipient_domain        reject_rbl_client dul.dnsbl.sorbs.net
       reject_rbl_client smtp.dnsbl.sorbs.net        check_client_access
pcre:/usr/local/etc/postfix/dynamic.pcre        che
ck_client_access pcre:/usr/local/etc/postfix/dynamic_ranges.pcre
check_helo_access pcre:/usr/local/etc/postfix/helo_checks
permit_mx_backup        reject
smtpd_reject_unlisted_sender = yes
smtpd_restriction_classes = greylisting
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain =
smtpd_sasl_security_options = noanonymous
smtpd_sasl_tls_security_options = $smtpd_sasl_security_options
smtpd_sender_restrictions = reject_unknown_sender_domain
check_sender_access hash:/usr/local/etc/postfix/access  permit
soft_bounce = no
tls_random_source = dev:/dev/urandom
transport_maps = hash:/usr/local/etc/postfix/transport
unknown_address_reject_code = 550
unknown_local_recipient_reject_code = 550
virtual_alias_domains = hash:/usr/local/etc/postfix/maildomains
virtual_alias_maps = ldap:xxx


Gruss
Tom
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