Mailserver Archives - Experiencing Technology https://blog.tinned-software.net/category/mailserver/ Tinned-Software Blog Fri, 21 Jan 2022 15:08:40 +0000 en-US hourly 1 https://wordpress.org/?v=6.5.4 Remove stuck emails from postfix mail queue https://blog.tinned-software.net/remove-stuck-emails-from-postfix-mail-queue/ Mon, 30 Sep 2019 19:10:29 +0000 https://blog.tinned-software.net/?p=2738 Sometimes mails queue up in the postfix mail queue for some reason, maybe the destination mailserver does not exist or some emails have a recipient address that is incorrect. This is generally not a problem, but sometimes, a system automation … Continue reading →

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  1. SPF and multiple domain mailserver
  2. Setup Postfix with SMTP-AUTH and TLS on CentOS
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]]> Setup Sieve mail filter with Postfix and Dovecot https://blog.tinned-software.net/setup-sieve-mail-filter-with-postfix-and-dovecot/ Mon, 04 Mar 2019 21:22:17 +0000 https://blog.tinned-software.net/?p=2701 A mailbox can get flooded with many emails, some are automatically generated, others are related to orders. Sorting through emails on a daily basis can be a tedious task. Email filters can help automate the most common tasks. One of … Continue reading →

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  1. SPF and multiple domain mailserver
  2. Harden the SSL configuration of your mailserver
  3. Setup Postfix with SMTP-AUTH and TLS on CentOS
]]> Permanently reject a specific email sender address using postfix https://blog.tinned-software.net/permanently-reject-a-specific-email-sender-address-using-postfix/ Mon, 27 Mar 2017 18:26:09 +0000 https://blog.tinned-software.net/?p=2295 Postfix generally accepts all sender addresses. It might be needed in some rare cases to reject one sender addresses for some reason. With postfix, there is the possibility to use the “check_sender_access” to set individual actions per sender address. For the … Continue reading →

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  1. SPF and multiple domain mailserver
  2. Setup Postfix with SMTP-AUTH and TLS on CentOS
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]]> Setup amavisd-new with spamassassin and clamav with postfix https://blog.tinned-software.net/setup-amavisd-new-with-spamassassin-and-clamav-with-postfix/ Mon, 17 Aug 2015 22:28:11 +0000 http://blog.tinned-software.net/?p=1372 In the here described setup, postfix passes the incoming mails on to amavisd-new. There, the emails get checked for viruses and spam. After the email is checked, it is sent back to postfix for its delivery. Continue reading →

The post Setup amavisd-new with spamassassin and clamav with postfix appeared first on Experiencing Technology.

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  2. Setup Postfix with SMTP-AUTH and TLS on CentOS
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]]> Reject individual email address with address extension https://blog.tinned-software.net/reject-individual-email-address-with-address-extension/ Mon, 20 Jul 2015 20:00:10 +0000 http://blog.tinned-software.net/?p=1779 With address extension configured in postfix, it is very easy to use new email addresses for every website you register on, but if some website leaks your email, you might receive lots of spam. If the address was an email address configured … Continue reading →

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  1. Configure address extension in Postfix
  2. SPF and multiple domain mailserver
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]]> Setup Dovecot with PAM authentication and SSL on CentOS https://blog.tinned-software.net/setup-dovecot-with-pam-authentication-and-ssl-on-centos/ Mon, 22 Jun 2015 18:52:58 +0000 http://blog.tinned-software.net/?p=1164 Dovecot will act as the IMAP server for this setup. If you need POP3, this can also be provided by dovecot, but in this article I’m just going to show how to setup IMAP with SSL to protect the transfer of emails. Installation … Continue reading →

The post Setup Dovecot with PAM authentication and SSL on CentOS appeared first on Experiencing Technology.

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  1. Setup Postfix with SMTP-AUTH and TLS on CentOS
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]]> Configure address extension in Postfix https://blog.tinned-software.net/configure-address-extension-in-postfix/ Mon, 11 May 2015 06:38:07 +0000 http://blog.tinned-software.net/?p=1382 Address extension is one of the features known from GMail but never thought about configuring for your own mail server. I did not think about it for quite some time as i thought it might be complicate to achieve this feature. But I was surprised to see how easy it using postfix. Continue reading →

The post Configure address extension in Postfix appeared first on Experiencing Technology.

Related posts:

  1. Reject individual email address with address extension
  2. SPF and multiple domain mailserver
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]]> Harden the SSL configuration of your mailserver https://blog.tinned-software.net/harden-the-ssl-configuration-of-your-mailserver/ Mon, 13 Apr 2015 13:44:10 +0000 http://blog.tinned-software.net/?p=1663 I described in one of my earlier post how to Setup Postfix with SMTP-AUTH and TLS on CentOS. I will follow up on this article describing how to harden the configuration of your mail server related to SSL. Continue reading →

The post Harden the SSL configuration of your mailserver appeared first on Experiencing Technology.

Related posts:

  1. Setup Sieve mail filter with Postfix and Dovecot
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  3. Setup Postfix with SMTP-AUTH and TLS on CentOS
]]> Setup Postfix for multiple domains https://blog.tinned-software.net/setup-postfix-for-multiple-domains/ Mon, 01 Sep 2014 11:49:51 +0000 http://blog.tinned-software.net/?p=1360 If you have postfix configured as your mail server you have most likely configured it for one particular domain. If you have more then one domain, you can configure postfix to handle those as well to receive emails for them. In … Continue reading →

The post Setup Postfix for multiple domains appeared first on Experiencing Technology.

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  2. Setup Postfix with SMTP-AUTH and TLS on CentOS
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]]> Setup Postfix with SMTP-AUTH and TLS on CentOS https://blog.tinned-software.net/setup-postfix-with-smtp-auth-and-tls-on-centos/ https://blog.tinned-software.net/setup-postfix-with-smtp-auth-and-tls-on-centos/#comments Tue, 17 Jun 2014 07:48:00 +0000 http://blog.tinned-software.net/?p=1159 Understanding Postfix Postfix is like a router in a network, just for email traffic. It receives emails from a sender and tries to send them on to their recipient, where the recipient can be the local postfix server or some other … Continue reading →

The post Setup Postfix with SMTP-AUTH and TLS on CentOS appeared first on Experiencing Technology.

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  1. Setup Dovecot with PAM authentication and SSL on CentOS
  2. SPF and multiple domain mailserver
  3. Setup Postfix for multiple domains
]]> https://blog.tinned-software.net/setup-postfix-with-smtp-auth-and-tls-on-centos/feed/ 1 SPF and multiple domain mailserver https://blog.tinned-software.net/spf-and-multiple-domain-mailserver/ https://blog.tinned-software.net/spf-and-multiple-domain-mailserver/#comments Wed, 20 Mar 2013 10:04:58 +0000 http://blog.tinned-software.net/?p=283 We all hate spam, right? I think you all know the annoying emails, but what is worse than receiving emails? How about when emails you send to someone are for some reason detected as spam? This happened to me recently. … Continue reading →

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  1. Permanently reject a specific email sender address using postfix
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  3. Migrate Baikal with minimal downtime
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