Monthly Archives: September 2012

Reading Sendmail logs

Typical place for Sendmail logs under Linux is /var/log/maillog. Every line in log has the following elements : timestamp, name of the machine that has generated the log, word “sendmail”:, and a message. Most of the messages is of the … Continue reading

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Sendmail log error

If in your Sendmail log (which is usually in /var/log/maillog) you get error like this one, or similar : ….collect: premature EOM: Connection reset by [10.10.10.11] …. SYSERR(root): collect: I/O error on connection from [10.10.10.11]… know that you have a … Continue reading

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Mail server, and what you should ALWAYS bear in mind

Overview SMTP, POP3 and IMAP are TCP/IP protocols used for mail delivery. If you plan to set up an email server such as MailServer, you must know what they are used for. Each protocol is just a specific set of … Continue reading

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Version and patch level for Unix system

This post is mostly about HP UX systems… What is it that ou can see, and how : General data concerning the system : />uname -a name-of-the-operating-system server-name momentary-release-level type-and-server-model server-identification-number license-type OS level : />swlist -l bundle HPUXBaseAux HPUXBaseAux … Continue reading

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X win for Unix GUI access, and SAR

If you neeed a GUI towards your Linux server, because you only have SSH connection at the moment (Putty for example), here is one small program that is very good for this : Link I have tried it, and it … Continue reading

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MailScanner and its quarantine

How to activate quarantine under MailScanner, and how to set up keep-time (how long the quarantined messages are kept on server) : Configuration parameters for this are in file /etc/cron.daily/clean.quarantine Quarantine activation is done through option (disabled is 1, enabled … Continue reading

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Syslog server

So the central location for collectiong all logs from servers or/and communication equipment. Syslog server goes with every version (newer) of Fedora and RHEL, and works quite well, but if you work with larger quantity of data, syslog-ng server is … Continue reading

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Fedora 14 and VNC server

So in higher versions of Fedora and RHEL there is no VNC server, it is renamed tiger-vnc, and for Fedora, it is downloaded like this : #yum install tigervnc-server Configuring it : # vncserver First startup of VNC server You … Continue reading

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Linux comments

Looking at mail server log, I caught a very obscure message : Command stream end of file while reading line user=user1 host=[10.10.11.12] And user1 is not receiving the mails sent to him. They are in a mailbox, but client can … Continue reading

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Book reccomendation

Wonderful serial (I ahve read all eleven!), very funny and entertaining. Good for both children and grownups. Writer : Robert Asprin Serial : Myth Genre : Fantasy Link :

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