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