fail2ban postfix-sasl filter not working, use postfix auth mode instead

Published on May 31st 2024 - Listed in Monitoring Linux Security Mail - 0 comments

Yet another DNSBL has gone offline (spamtrap.drbl.drand.net)

Published on March 27th 2024 - Listed in Monitoring Internet Mail - 0 comments

Where is the mailx command in Rocky Linux 9? Use s-nail from now on!

Published on November 8th 2023 - Listed in Linux Mail - 0 comments

Postfix not resolving MX and deferring e-mails after DNS server change (Host or domain name not found, Name service error)

Published on April 18th 2023 - Listed in Mail Linux DNS - 0 comments

Postfix process (and listener) not running after service restart: The mystery of the master.lock file

Published on December 7th 2022 - Listed in Mail Linux - 0 comments

Understanding Perl Net::DNS resolving and patching check_rbl to support a specific nameserver

Published on August 5th 2022 - Listed in Perl Coding Monitoring DNS Mail - 0 comments

Postfix rejects all incoming e-mails with message: blocked using zen.spamhaus.org; Error: open resolver

Published on August 4th 2022 - last updated on August 11th 2022 - Listed in Mail Internet Security Linux - 2 comments

How to detect and fix (mitigate) SSL/TLS renegotiation DOS vulnerability in Postfix

Published on June 20th 2022 - Listed in Mail Internet Security SSL TLS Linux - 0 comments

How to enable missing secure cookie attribute in Roundcube webmail

Published on January 19th 2022 - Listed in Roundcube Cloud Mail Security - 0 comments

DNS RBL check timed out on dnsbl.anticaptcha.net: Yet another DNSBL blocklist is gone

Published on July 6th 2021 - Listed in Monitoring Internet Mail - 0 comments

Painless e-mail mailbox migration/sync using imapsync

Published on January 14th 2021 - Listed in Mail Cloud Internet Linux - 0 comments

Upgrading Roundcube from 1.3.x to 1.4.x and testing the new responsive skin (Elastic)

Published on July 31st 2020 - last updated on August 1st 2020 - Listed in Internet Cloud Mail Roundcube - 0 comments

Blacklisted on bl.emailbasura.org? Yet another DNSBL blacklist is gone.

Published on October 30th 2019 - Listed in Monitoring Mail Internet - 0 comments

How to protect your mailbox from spammers using only digit domains with SpamAssassin

Published on July 12th 2019 - Listed in Mail Linux - 0 comments

Blacklisted on bl.spamcannibal.org? Yet another DNSBL blacklist is gone.

Published on May 31st 2019 - Listed in Mail Internet Monitoring - 2 comments

Adapt Roundcube managesieve plugin to dynamically lookup sieve host

Published on September 7th 2018 - Listed in PHP Mail Linux Roundcube - 0 comments

Unable to download attachment from Gmail, how to get it anyway (by using Takeout)

Published on April 9th 2018 - Listed in Internet Linux Mail - 0 comments

Permissions of log files automatically being reset by syslog

Published on June 27th 2017 - Listed in Linux Mail - 2 comments

Force Postfix to allow empty HELO/EHLO commands

Published on September 22nd 2016 - Listed in Mail Linux - 0 comments

Slow down central mail relay server but with domain exceptions

Published on August 30th 2016 - Listed in Mail Linux Internet - 0 comments

rsyslog not logging into /var/log/mail.log? Check permissions!

Published on August 22nd 2016 - Listed in Linux Mail - 1 comments

Create a fake mail server to test mail functions in applications

Published on June 7th 2016 - Listed in Linux Mail - 0 comments

SpamAssassin stopped working? Check loopback interface!

Published on May 26th 2016 - Listed in Mail Linux - 0 comments

Disable AHBL (Abuse Hosts) DNS blocklist in Spamassassin

Published on January 20th 2015 - Listed in Internet Mail Linux - 3 comments

Using Nagios check_smtp -S without SSLv3 (sslv3 alert handshake failure)

Published on October 21st 2014 - Listed in Nagios Monitoring Security Internet Mail - 0 comments

Automate Postfix installation in Debian and Ubuntu with debconf

Published on July 21st 2014 - Listed in Mail Linux LXC - 0 comments

Finding a spammer (or spam script) sometimes takes time and patience

Published on May 13th 2014 - Listed in Linux Hacks Internet Mail - 0 comments

Atmail mail server with orphaned exim processes

Published on March 5th 2014 - Listed in Mail Linux - 0 comments

Comparing new Roundcube 1.0 config file and its options to older 0.8.x

Published on February 11th 2014 - Listed in Mail PHP Linux Roundcube - 0 comments

Mass convert and migrate mails from mbox to maildir destination

Published on February 4th 2014 - Listed in Mail Linux - 0 comments

Atmail license key exceeded error - a global issue

Published on December 20th 2013 - Listed in Mail Internet Rant - 0 comments

Dear Gmail: What is going on with your spam filter?!

Published on December 19th 2013 - Listed in Mail Internet Personal Rant - 0 comments

phpmailer with mini_sendmail issue also affects modified shop cms

Published on October 2nd 2013 - Listed in Internet PHP Mail CMS Rant - 0 comments

Bad admins: When the abuse mail address does not work (MTNL Delhi)

Published on September 4th 2013 - Listed in Internet Personal Mail Rant - 0 comments

Changed UID of postfix - clean-up steps to do afterwards

Published on August 7th 2013 - Listed in Linux Mail - 0 comments

Kolab Groupware - Potential but not yet production ready

Published on July 1st 2013 - Listed in Linux Internet Mail Rant - 0 comments

How to monitor qmail mail queue (check_mailq alternative)

Published on April 29th 2013 - Listed in Nagios Linux Shell Mail Monitoring - 2 comments

Handling qmail queue

Published on April 19th 2013 - Listed in Linux Shell Mail - 1 comments

Follow-up on the Joomla mailing issue with mini_sendmail

Published on April 16th 2013 - Listed in Internet PHP Mail - 0 comments

High CPU load due to mass imap-logins on dovecot

Published on March 15th 2013 - Listed in Linux Internet Mail - 0 comments

Dovecot suicide after ntp activation

Published on January 21st 2013 - Listed in Linux Unix Mail Rant - 0 comments

Atmail increasingly uses disk space due to tmp files

Published on November 30th 2012 - Listed in Linux Mail - 0 comments

mailx command sends mail body as attachment (noname)

Published on November 2nd 2012 - Listed in Linux Mail - 3 comments

Send e-mails from local Postfix to local Exim on same host

Published on October 25th 2012 - Listed in Linux Internet Mail - 0 comments

Check/monitor SMTP server for TLS and SSL connections

Published on October 22nd 2012 - Listed in Linux Nagios Internet Mail Monitoring - 0 comments

Spam-Attacks (possibly Dark Mailer) through abused FTP account within 1s

Published on September 3rd 2012 - Listed in Internet PHP Linux Hacks Mail - 0 comments

Postfix: Enforce sending encrypted e-mails with TLS (smtp over TLS)

Published on August 3rd 2012 - Listed in Linux Internet Mail - 1 comments

Joomla forms (PHPMailer) do not work with mini_sendmail

Published on July 17th 2012 - Listed in Internet PHP Linux Mail - 0 comments

PHP mail() not working in chroot vhost (Could not execute mail delivery...)

Published on June 22nd 2012 - Listed in PHP Linux Mail - 2 comments

Fixing Majordomo/Majorcool error: majordomo.cf Not Readable; Stopped.

Published on June 19th 2012 - Listed in Linux Mail - 0 comments

Testing Roundcube 0.8 Release Candidate (plugin compatibility)

Published on May 27th 2012 - Listed in PHP Mail Roundcube - 0 comments

New Gmail Layout: Show labeled text buttons again

Published on April 24th 2012 - Listed in Internet Mail Cloud - 0 comments

Manage Confixx SpamAssassin User Settings in Roundcube

Published on April 20th 2012 - Listed in Internet PHP Mail Roundcube - 0 comments

Anti-(Blog)-Spamming technologies: Captcha vs. Questions

Published on April 1st 2012 - Listed in Internet Personal Mail - 1 comments

Exchange 2003: Virtual memory fragmentation errors (Event ID's 9582, 12800)

Published on February 20th 2012 - Listed in Windows Mail - 0 comments

SMTP Internet provider interception - I do not like it.

Published on August 16th 2011 - Listed in Internet Mail Network Rant - 0 comments

Spam comparison: Ironport vs. Open Source solution

Published on August 12th 2011 - Listed in Linux Internet Mail - 1 comments

Postfix rewrite mail address ONLY for outgoing/sending e-mail

Published on June 1st 2011 - Listed in Linux Mail - 0 comments

Hotmail took more than one year to send an e-mail!

Published on May 23rd 2011 - Listed in Internet Mail - 0 comments

iPhone picture mails tagged as Spam

Published on December 10th 2010 - Listed in Internet Linux Mail - 0 comments

Exchange 2007: Find the mailbox or folder of an e-mail address

Published on December 2nd 2010 - Listed in Windows Mail - 0 comments

Zip-Unpacking problems with Amavisd-new 2.6.4

Published on July 7th 2010 - Listed in Linux Mail - 0 comments

Exchange says 550 5.7.1 authentication required and rejects mail

Published on June 25th 2010 - Listed in Windows Mail - 0 comments

Follow-up on Connection Error when trying to send mail on Android

Published on April 26th 2010 - Listed in Android Linux Mail - 0 comments

Connection failed error when trying to send mail on Android

Published on April 22nd 2010 - Listed in Android Linux Mail Rant - 0 comments

$* is no longer supported - Confixx Counterscript error

Published on March 15th 2010 - Listed in Linux Mail - 0 comments

Gmail now supports sending from external e-mail addresses

Published on January 11th 2010 - Listed in Internet Mail - 0 comments

Postfix rejects incoming e-mails with 450 Server configuration error

Published on October 21st 2009 - Listed in Linux Mail - 0 comments

Fighting Spam with SpamAssassin

Published on September 22nd 2009 - Listed in Internet Linux Mail - 0 comments

Testing a new Mailserver

Published on June 22nd 2009 - Listed in Internet Linux Mail - 0 comments

Google Mail (GMail) now with different themes (layouts)

Published on November 20th 2008 - Listed in Internet Mail - 0 comments

RSS feed

Blog Tags:

  AWS   Android   Ansible   Apache   Apple   Atlassian   BSD   Backup   Bash   Bluecoat   CMS   Chef   Cloud   Coding   Consul   Containers   CouchDB   DB   DNS   Database   Databases   Docker   ELK   Elasticsearch   Filebeat   FreeBSD   Galera   Git   GlusterFS   Grafana   Graphics   HAProxy   HTML   Hacks   Hardware   Icinga   Influx   Internet   Java   KVM   Kibana   Kodi   Kubernetes   LVM   LXC   Linux   Logstash   Mac   Macintosh   Mail   MariaDB   Minio   MongoDB   Monitoring   Multimedia   MySQL   NFS   Nagios   Network   Nginx   OSSEC   OTRS   Office   PGSQL   PHP   Perl   Personal   PostgreSQL   Postgres   PowerDNS   Proxmox   Proxy   Python   Rancher   Rant   Redis   Roundcube   SSL   Samba   Seafile   Security   Shell   SmartOS   Solaris   Surveillance   Systemd   TLS   Tomcat   Ubuntu   Unix   VMWare   VMware   Varnish   Virtualization   Windows   Wireless   Wordpress   Wyse   ZFS   Zoneminder