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Home Archives for cloud, edge and everything in between administration and orchestration mail servers

Some things never change. Love it or hate it, but everyone still needs email.

How to get a grip on your log files growing outta control: set up and force logrotate

Cloud Insidr 2016-08-24 Leave a Comment

How to get a grip on your log files growing outta control: set up and force logrotate

Logs that grow in size uncontrollably can cause unintended consequences. If you keep ignoring the situation, it will only get worse until you run our of disc space, the system starts being unresponsive or processes begin to crash.

[Read more…]

Filed Under: administration and orchestration, databases, Linux, mail servers, web servers in the cloud Tagged With: Dovecot, logs

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 1 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.

[Read more…]

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

How to Set Up Anti-Spam Filters Using Regular Expressions the Smart Way

Anna E Kobylinska 2016-03-02 Leave a Comment

How to Set Up Anti-Spam Filters Using Regular Expressions the Smart Way

In order to fish our spammer’s emails and other identifying information, you can use your mail clients’ log files and/or junk email. Here is how to get started.

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Filed Under: mail servers Tagged With: RegEx

How to renew a Letsencrypt certificate

Anna E Kobylinska 2016-02-21 Leave a Comment

How to renew a Letsencrypt certificate

In a post titled How to Set Up Letsencrypt, the SSL-Certificate Engine for the Cloud Era of Hyperscale, on AWS EC2, we have introduced you to this free, open, and fully automated Certificate Authority backed by the likes of Facebook (a gold sponsor), and discussed a manual setup for adventurers in How to Use Letsencrypt across Servers in the Manual Configuration Mode with a CSR.

Now is the time to discuss how to extend the validity of a Letsencrypt certificate for up to another 90 days of blissful happiness.

[Read more…]

Filed Under: administration and orchestration, cloud, edge and everything in between, cybersecurity and cyber warfare, encryption, mail servers, web servers in the cloud Tagged With: certificate, letsencrypt, SSL

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