DKIM (Domain keys identified Mail) is a scheme for which allows a receiver to verify that the email originated (or authorized) by the domain’s owner via a digital signature.
Having DKIM signature adds credibility to the email messages sent from the origin host/domain, which is crucial for automated emailing system to avoid the messages from being suspected as SPAM email or spoofed email.
I managed to set up DKIM for an academic journal website which I’ve managed. The journal’s runs on Open Journal System web application, the addition of DKIM is crucial to avoid GMail or Microsoft Live from labeling the automated emails sent from the academic journal from being labeled as spam.
At first I found that the DKIM scheme that I’ve setup was running fine and the email messages was verified correctly from my Organizational email domain. However, I’ve noticed a problem when the automated email sent from OJS is not properly verified by Gmail-addressed account (@gmail.com). Upon inspection in the email header, I’ve noticed that the GMail marked the DKIM signature sent from my domain as “bad format”. Example below:
After hours of searching and debugging, including referring to the DKIM NS TXT record for reference, I finally found out that Gmail treat the “g=*” optional parameter as required, and thus I’ve to append “;g=*” to the DKIM TXT record on my domains’ DNS record.
The most interesting plan is Flexible droplets where you can resize the droplets at any time choosing between with RAM or vCPU at the same price point.
Benefit for existing customer:
Existing customer can enjoy the new price point by clicking “Resize” option to get the new offering from Digitalocean
Benefit for new customers:
New customer will enjoy USD10 giveaway when signing up with Digitalocean. Remember that Digitalocean charges by hour, so you can test drive their VPS in a few days and can decide whether you want to continue or not with their service without any penalty
For those who are seeking free web hosting to test their PHP / MySQL application can look into InfinityFree.net service which has interesting offers:
Includes FTP account access (rare !!)
Up to 10 Email Account
Apache 2.4 with .htaccess
400 MySQL database
User can add their own domain
Free DNS service (including custom CNAME and MX record)
Unlimited Disk space and Bandwidth
Support Cloudflare CDN
Support SSL Certificate
The main advantages which entice me to InfinityFree are their support for SSL Certificate, 99% uptime guarantees and support for adding own domain name with their own free DNS.
The support for SSL certificate means that you can host Telegram Bot, Google Map web application and web app which utilizes OAuth API!
A rare sight for a completely free web hosting provider.
The only downside for InfinityFree is the free hosting only support up to 50,000 hitson the web server, which is fair by me as the free hosting could provide a good playground for Students and Web App Enthusiast to experiment with their code.