Category Archives: Email

Webmail is back

Having finished the work to migrate the UKFSN email service to a new server and re-implement the email filtering service I have just finished setting up the webmail service so customers can gain secure access to email from anywhere via … Continue reading

Posted in Email, Uncategorized

Email Filtering on UKFSN

Some time ago the email filtering service at UKFSN ran into serious problems and I had no choice but to disable it until I could completely rebuild the filtering platform. This resulted in all UKFSN email customers – and me! … Continue reading

Posted in Email, SPAM

Email server problem – caused bounces

A problem developed on the email server today that caused it to bounce some email. The problem was that the internal email delivery agent for email destined to our server stopped doing DNS lookups properly and so could not resolve … Continue reading

Posted in Email, Postfix

Mail Server issue this morning

There was a brief outage on the mail server this morning caused by a software upgrade that went slightly wrong. The issue was corrected within a couple of minutes and service restored. No email was lost.

Posted in Email

You are a spammer and you don’t even know it!

Over the past several months I have been seeing an increase in the number of customer accounts being abused to relay spam via our server. In each case the customer account credentials have been used to authenticate to our SMTP … Continue reading

Posted in Email, SPAM

How to test sending email using MIME::Lite

Earlier this week I had to update a system that uses the MIME::Lite module to send email so that the emails it sends are properly UTF-8 encoded. The change to the code was very simple. What was a little less … Continue reading

Posted in Code, Email, Perl, Testing

Preventing SMTP Auth abuse

One of the biggest problems I have had to deal with over the past few years has been abuse of authenticated SMTP. Spammers occasionally manage to obtain a customer’s username and password and use these to send email via our … Continue reading

Posted in Code, Email, Perl, Postfix, SPAM