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Author Archives: Christophe Wolfhugel
Easy use of Sendmail Premium Reporting
The other day I needed to get some statistics while visiting a customer about how many accounts could eventually have compromised passwords. The first thing I needed to consider is how to determine if an account has been compromised. Our … Continue reading
Posted in Christophe Wolfhugel
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Improving STARTTLS authentication in the Sendmail MTA
After having worked on what I think is the right way to setup X.509 certificates for use in SMTP STARTTLS transactions (see my previous blog entry here), I am continuing my work on how we can improve the way the … Continue reading
Posted in Christophe Wolfhugel, Email Security, Open source
Tagged Christophe Wolfhugel, security, STARTTLS
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Creating the right Certificates for STARTTLS use in SMTP
Recently I have been playing around with STARTTLS, SMTP & Enforcement of STARTTLS policy. This has led me to make several suggestions for evolutions on the way the sendmail open source MTA should handle this enforcement – I will address … Continue reading
Posted in Christophe Wolfhugel, Email Security, Open source
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To Greylist or Not to Greylist?
I’ve been thinking a lot about Greylisting lately and a post by Rogers Cadenhead in Watching the Watchers on alternative methods of stopping spammers (more on this below) got my mind going even more. Now, please bear with me as … Continue reading
Posted in Christophe Wolfhugel, Uncategorized
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EMEA User Conference: Using Nagios
In today’s environment, not only must an email system do its job by routing adequately and efficiently our customers’ messages, but it must also come with a practical and widely accepted way for being monitored. Sendmail’s approach in this is … Continue reading