hackerbruecke.net

monitoring

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:58:04 +0000

Monitoring email-monitoring * create „/var/lib/rrd“ Mailgraph mailgraph is a very simple mail statistics RRDtool frontend for Postfix that produces daily, weekly, monthly and yearly graphs of received/sent and bounced/rejected mail (SMTP traffic).

amavisd

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:57:55 +0000

AmaVisd-new /etc/amavis/amavisd.conf: use strict; # a minimalistic configuration file for amavisd-new with all necessary settings # # see amavisd.conf-default for a list of all variables with their defaults; # see amavisd.conf-sample for a traditional-style commented file; # for more details see documentation in INSTALL, README_FILES/* # and at http://www.ijs.si/software/amavisd/amavisd-new-docs.html # COMMONLY ADJUSTED SETTINGS: # @bypass_virus_checks_maps = (1); # uncomment to DI…

pflogsum

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:56:02 +0000

Postfix-Reporting mit Pflogsum apt-get install pflogsum /usr/local/bin/postfix_report.sh #!/bin/bash /usr/sbin/pflogsumm -d yesterday --problems_first /var/log/mail.log.1 > /tmp/pflogsumm /usr/bin/mailx -s "Automatischer Postfix-Report von $(hostname)" -r postfix-admin@station7.example.de postfix-admin@station7.example.de < /tmp/pflogsumm

sasl

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:56:42 +0000

SASL A very conveniant way of configuring the Simple Authentication and Security Layer (SASL) is to use the Pluggable Authentication Modules (PAM), since it can use diffrent authentication sources like ldap or /etc/passwd - thus SASL is everything but simple

config

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:52:33 +0000

Cyrus imapd / popd Modify /etc/cyrus.conf to: START { recover cmd="ctl_cyrusdb -r" deliver cmd="ctl_deliver -r" } SERVICES { imap cmd="imapd" listen="imap" prefork=0 # imaps cmd="imapd -s" listen="imaps" prefork=0 pop3 cmd="pop3d" listen="pop3" prefork=0 # pop3s cmd="pop3d -s" listen="pop3s" prefork=0 sieve cmd="timsieved" listen="sieve" prefork=2 # entry must be the same as in th…

cyrus_secure

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:52:44 +0000

TLS, IMAP over SSL (imaps) and pop3 over SSL (pop3s) TLS Modify / append the TLS-settings in /etc/imap.conf: #--- SSL/TLS setting ---# tls_ca_path: /etc/ssl/certs tls_ca_file: /etc/ssl/certs/ca_cert.pem tls_cert_file: /etc/ssl/certs/station7_cert.pem tls_key_file: /etc/ssl/private/station7_key.pem

postfix_secure

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:56:23 +0000

Postfix with TLS and SSL (smtps) Use a portscanner like „nmap“: station7:/etc/init.d # nmap localhost | grep smtp 25/tcp open smtp -> smtp is only running at port 25! TLS Modify the TLS-settings in /etc/postfix/main.cf #--- SSL/TLS setting ---# smtpd_client_restrictions= permit_tls_clientcerts, permit_sasl_authenticated smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, permit_tls_clientcerts, reject_unauth_destination, check_sender_access hash:/etc/…