SPECIAL-USE mit Outlook 2013 in Dovecot

Outlook 2013 ist nun erschienen, und Fragen im Zusammenhang mit dem neuem Feature IMAP SPECIAL-USE Ordner nach RFC 6154 häufen sich. Bisher existieren nur Erklärungen in Englisch, und weil gerade auf den deutschen Mailinglisten immer wieder danach gefragt wird, habe ich mich entschlossen, diesen kleinen bebilderten Beitrag zu schreiben.

Nach …

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OTP in FreeRADIUS

OTP in FreeRADIUS

One time passwords (OTP) are a very safe way to implement two factor authentication. So I looked for a easy possibililty to use OTP in FreeRADIUS. I also wanted to use smart phone based OTP generators, since everybody has such a device nowadays. Finally I found a …

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DNS requests dropped at the firewall

My customer saw a very strange behaviour of DNS packets. Some of the packets where dropped at the firewall. Since this caused a short delay I was asked to do some analysis. It turned out I had to debug an IPv4/IPv6 glibc problem. But first things first…

What happened …

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