<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div>Hi,</div>
<div> </div>
<div>auf meinem Postfix-Server kommen seit gestern keine Mails mehr bei den Benutzern an. Auf dem sendenden Mailserver sehe ich "connect to mx.theirdomain.com[xxx.yyy.zz.2]:25: Connection refused" und ein</div>
<div>
<div>telnet localhost 25<br/>
Trying ::1...<br/>
Trying 127.0.0.1...<br/>
telnet: Unable to connect to remote host: Connection refused</div>
<div><br/>
scheitert ebenfalls.</div>
<div>lsof -i tcp:25 liefert eine leere Ausgabe.</div>
</div>
<div> </div>
<div><strong>postconf -n:</strong></div>
<div><em>alias_database = hash:/etc/aliases<br/>
alias_maps = hash:/etc/aliases<br/>
append_dot_mydomain = no<br/>
biff = no<br/>
bounce_queue_lifetime = 1h<br/>
broken_sasl_auth_clients = yes<br/>
compatibility_level = 2<br/>
disable_vrfy_command = yes<br/>
greylist = permit_dnswl_client list.dnswl.org, check_policy_service inet:127.0.0.1:10023<br/>
html_directory = /usr/share/doc/postfix/html<br/>
inet_interfaces = all<br/>
inet_protocols = all<br/>
mailbox_size_limit = 0<br/>
maximal_backoff_time = 15m<br/>
maximal_queue_lifetime = 1h<br/>
message_size_limit = 26214400<br/>
minimal_backoff_time = 300s<br/>
mydestination = mx.theirdomain.com, localhost.theirdomain.com, localhost<br/>
myhostname = mx.theirdomain.com<br/>
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128<br/>
myorigin = /etc/mailname<br/>
plaintext_reject_code = 550<br/>
postscreen_access_list = permit_mynetworks, cidr:/etc/postfix/postscreen_access.cidr<br/>
postscreen_bare_newline_enable = no<br/>
postscreen_blacklist_action = drop<br/>
postscreen_cache_cleanup_interval = 24h<br/>
postscreen_cache_map = proxy:btree:$data_directory/postscreen_cache<br/>
postscreen_dnsbl_action = drop<br/>
postscreen_dnsbl_sites = b.barracudacentral.org=127.0.0.2*7 dnsbl.inps.de=127.0.0.2*7 bl.mailspike.net=127.0.0.2*5 bl.mailspike.net=127.0.0.[10;11;12]*4 dnsbl.sorbs.net=127.0.0.10*8 dnsbl.sorbs.net=127.0.0.5*6 dnsbl.sorbs.net=127.0.0.7*3 dnsbl.sorbs.net=127.0.0.8*2 dnsbl.sorbs.net=127.0.0.6*2 dnsbl.sorbs.net=127.0.0.9*2 zen.spamhaus.org=127.0.0.[10;11]*8 zen.spamhaus.org=127.0.0.[4..7]*6 zen.spamhaus.org=127.0.0.3*4 zen.spamhaus.org=127.0.0.2*3 hostkarma.junkemailfilter.com=127.0.0.2*3 hostkarma.junkemailfilter.com=127.0.0.4*1 hostkarma.junkemailfilter.com=127.0.1.2*1 wl.mailspike.net=127.0.0.[18;19;20]*-2 hostkarma.junkemailfilter.com=127.0.0.1*-2<br/>
postscreen_dnsbl_threshold = 8<br/>
postscreen_dnsbl_ttl = 5m<br/>
postscreen_greet_action = enforce<br/>
postscreen_greet_banner = $smtpd_banner<br/>
postscreen_greet_ttl = 2d<br/>
postscreen_greet_wait = 3s<br/>
postscreen_non_smtp_command_enable = no<br/>
postscreen_pipelining_enable = no<br/>
proxy_read_maps = proxy:mysql:/etc/postfix/sql/mysql_virtual_sender_acl.cf, proxy:mysql:/etc/postfix/sql/mysql_tls_enforce_out_policy.cf, proxy:mysql:/etc/postfix/sql/mysql_tls_enforce_in_policy.cf, $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $smtpd_sender_login_maps<br/>
queue_run_delay = 300s<br/>
readme_directory = /usr/share/doc/postfix<br/>
recipient_delimiter = +<br/>
relay_domains = proxy:mysql:/etc/postfix/sql/mysql_virtual_mxdomain_maps.cf<br/>
relay_recipient_maps = proxy:mysql:/etc/postfix/sql/mysql_relay_recipient_maps.cf<br/>
relayhost =<br/>
sender_dependent_default_transport_maps = proxy:mysql:/etc/postfix/sql/mysql_tls_enforce_out_policy.cf<br/>
smtp_dns_support_level = dnssec<br/>
smtp_header_checks = pcre:/etc/postfix/submission_header_cleanup<br/>
smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt<br/>
smtp_tls_loglevel = 1<br/>
smtp_tls_security_level = dane<br/>
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache<br/>
smtpd_banner = $myhostname<br/>
smtpd_client_restrictions = permit_mynetworks check_client_access hash:/etc/postfix/without_ptr reject_unknown_client_hostname<br/>
smtpd_data_restrictions = reject_unauth_pipelining, permit<br/>
smtpd_delay_reject = yes<br/>
smtpd_error_sleep_time = 10s<br/>
smtpd_hard_error_limit = ${stress?1}${stress:5}<br/>
smtpd_helo_required = yes<br/>
smtpd_proxy_timeout = 600s<br/>
smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_invalid_helo_hostname, reject_unknown_reverse_client_hostname, reject_unauth_destination<br/>
smtpd_restriction_classes = greylist<br/>
smtpd_sasl_auth_enable = yes<br/>
smtpd_sasl_authenticated_header = yes<br/>
smtpd_sasl_path = private/auth_dovecot<br/>
smtpd_sasl_type = dovecot<br/>
smtpd_sender_login_maps = proxy:mysql:/etc/postfix/sql/mysql_virtual_sender_acl.cf<br/>
smtpd_sender_restrictions = reject_authenticated_sender_login_mismatch, permit_mynetworks, reject_sender_login_mismatch, permit_sasl_authenticated, reject_unlisted_sender, reject_unknown_sender_domain<br/>
smtpd_soft_error_limit = 3<br/>
smtpd_tls_auth_only = yes<br/>
smtpd_tls_cert_file = /etc/ssl/mail/mail.crt<br/>
smtpd_tls_ciphers = high<br/>
smtpd_tls_dh1024_param_file = /etc/ssl/mail/dhparams.pem<br/>
smtpd_tls_eecdh_grade = strong<br/>
smtpd_tls_exclude_ciphers = ECDHE-RSA-RC4-SHA, RC4, aNULL<br/>
smtpd_tls_key_file = /etc/ssl/mail/mail.key<br/>
smtpd_tls_loglevel = 1<br/>
smtpd_tls_mandatory_ciphers = high<br/>
smtpd_tls_mandatory_exclude_ciphers = ECDHE-RSA-RC4-SHA, RC4, aNULL<br/>
smtpd_tls_mandatory_protocols = !SSLv3<br/>
smtpd_tls_protocols = !SSLv3<br/>
smtpd_tls_security_level = may<br/>
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache<br/>
tls_high_cipherlist = EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH:+CAMELLIA256:+AES256:+CAMELLIA128:+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!ECDSA:CAMELLIA256-SHA:AES256-SHA:CAMELLIA128-SHA:AES128-SHA<br/>
tls_preempt_cipherlist = yes<br/>
tls_ssl_options = NO_COMPRESSION<br/>
virtual_alias_maps = proxy:mysql:/etc/postfix/sql/mysql_virtual_alias_maps.cf, proxy:mysql:/etc/postfix/sql/mysql_virtual_spamalias_maps.cf, proxy:mysql:/etc/postfix/sql/mysql_virtual_alias_domain_maps.cf, proxy:mysql:/etc/postfix/sql/mysql_virtual_alias_domain_catchall_maps.cf<br/>
virtual_gid_maps = static:5000<br/>
virtual_mailbox_base = /var/vmail/<br/>
virtual_mailbox_domains = proxy:mysql:/etc/postfix/sql/mysql_virtual_domains_maps.cf<br/>
virtual_mailbox_maps = proxy:mysql:/etc/postfix/sql/mysql_virtual_mailbox_maps.cf, proxy:mysql:/etc/postfix/sql/mysql_virtual_alias_domain_mailbox_maps.cf<br/>
virtual_minimum_uid = 104<br/>
virtual_transport = lmtp:unix:private/dovecot-lmtp<br/>
virtual_uid_maps = static:5000</em></div>
<div> </div>
<div> </div>
<div><strong>master.cf:</strong></div>
<div>
<div>
<div><em>smtp inet n - n - 1 postscreen<br/>
smtpd pass - - n - - smtpd<br/>
-o smtpd_helo_restrictions=permit_mynetworks,reject_non_fqdn_helo_hostname<br/>
-o smtpd_proxy_filter=127.0.0.1:10024<br/>
-o content_filter=<br/>
# -o smtpd_client_connection_count_limit=10<br/>
-o smtpd_proxy_options=speed_adjust<br/>
smtps inet n - n - - smtpd<br/>
-o smtpd_tls_wrappermode=yes<br/>
-o smtpd_client_restrictions=permit_mynetworks,permit_sasl_authenticated,reject<br/>
-o smtpd_proxy_filter=127.0.0.1:10024<br/>
-o content_filter=<br/>
-o smtpd_client_connection_count_limit=10<br/>
-o smtpd_proxy_options=speed_adjust<br/>
submission inet n - - - - smtpd<br/>
-o smtpd_client_restrictions=permit_mynetworks,permit_sasl_authenticated,reject<br/>
-o smtpd_proxy_filter=127.0.0.1:10025<br/>
-o smtpd_client_connection_count_limit=10<br/>
-o smtpd_proxy_options=speed_adjust<br/>
-o smtpd_enforce_tls=yes<br/>
-o smtpd_tls_security_level=encrypt<br/>
-o tls_preempt_cipherlist=yes<br/>
-o cleanup_service_name=submission-header-cleanup<br/>
tlsproxy unix - - n - 0 tlsproxy<br/>
dnsblog unix - - n - 0 dnsblog<br/>
pickup fifo n - - 60 1 pickup<br/>
-o content_filter=<br/>
-o receive_override_options=no_header_body_checks<br/>
cleanup unix n - - - 0 cleanup<br/>
qmgr fifo n - n 300 1 qmgr<br/>
tlsmgr unix - - - 1000? 1 tlsmgr<br/>
rewrite unix - - - - - trivial-rewrite<br/>
bounce unix - - - - 0 bounce<br/>
defer unix - - - - 0 bounce<br/>
trace unix - - - - 0 bounce<br/>
verify unix - - - - 1 verify<br/>
flush unix n - - 1000? 0 flush<br/>
proxymap unix - - n - - proxymap<br/>
proxywrite unix - - n - 1 proxymap<br/>
smtp unix - - - - - smtp<br/>
smtp_enforced_tls unix - - - - - smtp<br/>
-o smtp_delivery_status_filter=pcre:/etc/postfix/smtp_dsn_filter.pcre<br/>
-o smtp_tls_security_level=encrypt<br/>
relay unix - - - - - smtp<br/>
showq unix n - - - - showq<br/>
error unix - - - - - error<br/>
retry unix - - - - - error<br/>
discard unix - - - - - discard<br/>
local unix - n n - - local<br/>
virtual unix - n n - - virtual<br/>
lmtp unix - - - - - lmtp<br/>
anvil unix - - - - 1 anvil<br/>
scache unix - - - - 1 scache<br/>
maildrop unix - n n - - pipe<br/>
flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient}<br/>
uucp unix - n n - - pipe<br/>
flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)<br/>
ifmail unix - n n - - pipe<br/>
flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)<br/>
bsmtp unix - n n - - pipe<br/>
flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient<br/>
scalemail-backend unix - n n - 2 pipe<br/>
flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}<br/>
mailman unix - n n - - pipe<br/>
flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py<br/>
${nexthop} ${user}<br/>
smtp-amavis unix - - - - 2 smtp<br/>
-o smtp_data_done_timeout=1200<br/>
-o smtp_send_xforward_command=yes<br/>
-o disable_dns_lookups=yes<br/>
-o max_use=20<br/>
127.0.0.1:10026 inet n - - - - smtpd<br/>
-o content_filter=<br/>
-o local_recipient_maps=<br/>
-o relay_recipient_maps=<br/>
-o smtpd_restriction_classes=<br/>
-o smtpd_delay_reject=no<br/>
-o smtpd_client_restrictions=permit_mynetworks,reject<br/>
-o smtpd_helo_restrictions=<br/>
-o smtpd_sender_restrictions=<br/>
-o smtpd_recipient_restrictions=permit_mynetworks,reject<br/>
-o smtpd_data_restrictions=reject_unauth_pipelining<br/>
-o smtpd_end_of_data_restrictions=<br/>
-o mynetworks=127.0.0.0/8<br/>
-o smtpd_error_sleep_time=0<br/>
-o smtpd_soft_error_limit=1001<br/>
-o smtpd_hard_error_limit=1000<br/>
-o smtpd_client_connection_count_limit=0<br/>
-o smtpd_client_connection_rate_limit=0<br/>
-o receive_override_options=no_header_body_checks,no_unknown_recipient_checks<br/>
submission-header-cleanup unix n - n - 0 cleanup<br/>
-o header_checks=pcre:/etc/postfix/submission_header_cleanup</em></div>
<div> </div>
<div>Woran kann das liegen?<br/>
<br/>
Vielen Dank<br/>
</div>
<div>Benny</div>
<div> </div>
</div>
</div></div></body></html>