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[18 May 2013 | Comments Off on Port 25 open on Shaw connection | 446 views]

While doing some mail server testing, I happened to notice that port 25 outbound on my run-of-the-mill, consumer grade, non-static Shaw connection is open. I wonder if this is a mistake, or if they’ve abandoned the practice.

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[28 May 2012 | Comments Off on Block outbound email to a specific domain with qmail | 485 views]

With Sendmail, I can block all email from (a sending domain to the server in question) and to a (foreign) domain using the /etc/mail/access file. However, apparently, it’s not so simple with qmail. Further complicating my need to prevent all users on one of my systems (which uses qmail) from sending email to certain domains is the fact that the system also uses Plesk, so I didn’t really want to start messing around with patching qmail and risk breaking something to do with Plesk.
After a fair bit of research I …

IT, Opinion, Updated posts »

[13 Oct 2011 | Comments Off on BlackBerry/RIM. Going, going, gone? | 645 views]

A couple of years ago my company had a major server outage on a primary server that brought down websites and email for almost two and a half hours. Such outages are rare, but they happen, and they happen to small hosting companies like NinerNet as well as the giants. After that outage I wrote about the lessons learnt and, without trying to deflect attention or criticism away from us, I pointed out an extensive list of major service outages experienced by the likes of Google, Amazon, YouTube, Barclays Bank, …