Category Archives: NetBSD

My view on the NetBSD operating system

Using S.M.A.R.T. under NetBSD

NetBSD has supported S.M.A.R.T. for a long time. But this functionality is well hidden. You can enable S.M.A.R.T. and check a single disk like this: # atactl wd0 smart enable SMART supported, SMART enabled # atactl wd0 smart status SMART supported, … Continue reading

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Automated attacks against Postfix

Yesterday evening I discovered thousands of lines like these in my server’s mail logfile: Jun 12 08:58:37 colwyn postfix/smtpd[25605]: warning: unknown[212.154.6.176]: SASL CRAM-MD5 authentication failed: PDM3MjM3NzE1Mzk1NjU1MDEuMTMwNzg2NTUxNUBjb2x3eW4uemhhZHVtLm9yZy51az4= Jun 12 08:58:44 colwyn postfix/smtpd[25605]: warning: unknown[212.154.6.176]: SASL CRAM-MD5 authentication failed: PDU0MDA0NDczMjgzNjU2NDAuMTMwNzg2NTUyMkBjb2x3eW4uemhhZHVtLm9yZy51az4= […] Jun … Continue reading

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Postfix and Dovecot: a Perfect Combination

Over a year ago I replaced Sendmail with Postfix on my main mail server. The new mail setup has worked very well ever since. There was however still room for improvement: I still used UW IMAP as the IMAP and … Continue reading

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