Clayton Peters

Author's details

Name: Clayton Peters
Date registered: July 19, 2012

Latest posts

  1. Yet more spam filtering… — January 22, 2015
  2. More Statistics — January 14, 2015
  3. Spam Filtering Update — November 6, 2014
  4. Spam Filtering — October 13, 2014
  5. Exam Results Release — June 27, 2014

Most commented posts

  1. More Statistics — 5 comments
  2. More Blackboard Improvement! — 2 comments
  3. Spam Filtering — 2 comments
  4. Exam Results Release — 1 comment

Author's posts listings

Jan 22

Yet more spam filtering…

Banned IPs per Day

I feel I’ve written a bit too much about spam filtering recently… but nonetheless, here’s one more, only with some graphs and maps! Attacks against our mail servers have not stopped since my last update – they’ve increased – but despite this, we’ve had very little spam (I won’t go as far as to say …

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Jan 14

More Statistics

Just over a year ago (in fact one of our first posts!) we posted some statistics about our estate and infrastructure. Here’s an update on where we are, plus some new stats: Our data centre is now mostly virtual. We have 68 VMware servers and 4 Solaris virtualisation hosts, running nearly 1200 virtual machines. Including …

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Nov 06

Spam Filtering Update

We’ve had a full month of our new edge SMTP service in place now so I thought I’d do a very quick post taking a look at how well it had performed in the last four weeks. Firstly the positive: 190,203 (!) attempts to send messages without authenticating A sum total of 430,431 (!!!) attempts …

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Oct 13

Spam Filtering

Junk mail – it’s irritating enough when it comes through your door, but it’s just as frustrating when it clutters up your e-mail inbox too. Sadly, there’s no one-stop solution for dealing with spam – it’s a constant war between the spammers and the spammed. As we deal with one wave of spam, the next …

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Jun 27

Exam Results Release

If you’re a student, it almost certainly hasn’t escaped your attention that this semesters exam results were released recently. This is one of the busiest points in the year for a couple of our services as almost all University of Southampton students try to access their results at the same time, whether it by logging …

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Feb 17

Blackboard Performance Update

Average Hourly Logins against Hour of Day

It’s been two months since we moved Blackboard to the new data centre and performed the various hardware upgrades (see the post we made about that here), so it’s about time that we take a look at how the service has performed since it went live, and how it coped with the demand of the …

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Dec 15

More Blackboard Improvement!

As you’re probably aware, Blackboard was scheduled to be unavailable for four days recently for us to do some maintenance. There’s never a good time to take down Blackboard, but this date was chosen to minimise the impact to our users – most students will be off home over this weekend and looking forward to …

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Mar 09

E-Mail Service Upgrades

The University revolves around e-mail. It’s one of our most important and largest services, both in terms of number of users, and amount of hardware required to run it. It ties in to many systems, both within the University and externally, so it also one of our more complex systems. As mentioned in a previous …

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Mar 08

Hello, World!

The purpose of this blog is for the operations and development teams within iSolutions to let everyone know what’s going on, what new things we’re working on, what we’re working on improving and to explain the cause of problems when things go wrong. We’ll be adding new posts periodically highlighting any interesting developments, information and …

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