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Home Archives for postfix
How to set up a mail server on AWS EC2 using open source software

Cloud Insidr 2017-08-23 Leave a Comment

How to set up a mail server on AWS EC2 using open source software

When running your own mail server you have complete control over its performance and reliability. Here is how to get started with an open-source mail server on AWS EC2.

[Read more…]

Filed Under: administration and orchestration, mail servers Tagged With: DNS, Dovecot, MTA, postfix, Route 53

Optimizing Postfix access maps to block incoming spam based on sender’s address

Cloud Insidr 2016-08-11 Leave a Comment

Optimizing Postfix access maps to block incoming spam based on sender’s address

Here is how you can improve your Postfix access maps in order to block incoming spam based on sender’s address.

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Filed Under: administration and orchestration, mail servers Tagged With: anti-spam defense, postfix, postmap, smtpd, spam

You’ve Got Mail: The Changing Landscape of Email Services and the Emergence of Unified Communications

Cloud Insidr 2016-03-29 Leave a Comment

You’ve Got Mail: The Changing Landscape of Email Services and the Emergence of Unified Communications

In the universe of email and messaging, change is accelerating. The world of IT came up with a new marketable buzzword with earth-shaking repercussions: Unified Communications.

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Filed Under: industry analysis, mail servers Tagged With: AWS, Dovecot, email, Exchange Server, Gmail, postfix, Sendmail, Unified Communications, WorkMail

WordPress Says Your Host May Have Disabled The mail() Function. Here Is How to Fix It.

Cloud Insidr 2016-02-14 Leave a Comment

WordPress Says Your Host May Have Disabled The mail() Function. Here Is How to Fix It.

Some WordPress installations stubbornly refuse requests for a password reset link, showing the user this error message instead:

The email could not be sent.
Possible reason: your host may have disabled the mail() function.

WordPress’ error massage is anything but insightful. The underlying cause usually involves SELinux. Let us introduce you to an easy fix that does not involve plug-ins or external email services. Buckle up.

[Read more…]

Filed Under: administration and orchestration, cloud, edge and everything in between, mail servers, NGINX, web servers in the cloud Tagged With: NGINX, postfix, SELinux, WordPress

Anti-Spam Defense: Using Postfix With smtpd Access Restrictions

Cloud Insidr 2015-11-15 Leave a Comment

Anti-Spam Defense: Using Postfix With smtpd Access Restrictions

Fighting spam, aren’t we all… To stem the tide of unwanted junk mail look no further than the built-in access restrictions in Postfix.

[Read more…]

Filed Under: administration and orchestration, cloud, edge and everything in between, mail servers Tagged With: DNS checks, HELO, logs, mail, postfix, postmap, RBL, RHSBL, smtpd, spam, Spamhaus

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