Old aliases for mailserver will be removed December 1

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C&CZ will remove the aliases for imap, imap-srv, imap-server, pop, pop-srv, pop-server, smtp, smtp-srv and smtp-server for domains cs , math, nmr, sci and theochem as of December 1. The automatic configuration of mailclients only uses post.science.ru.nl and smtp.science.ru.nl , as one should do when manually configuring a mailclient. Since the certificate of the mailserver is not valid for these old aliases, it raised security questions.