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Jul 30

If you’re unable to restart IMAP/POP3 Server (Courier-IMAP), have a look at the logs at /var/log/messages :

Following errors were found while digging the logs

Jul 29 22:42:21 asap3d courier-imap:    Starting pop3 succeeded
Jul 29 22:42:21 asap3d pop3d-ssl.rc: bind: Address already in use
Jul 29 22:42:21 asap3d pop3d-ssl.rc: ll_daemon_start: Resource temporarily unavailable

Above error will pop in due to incorrect courier-pop3d configuration or courier-pop3d is enabled via xinetd on the server.

If you find courier-pop3d and courier-pop3ds configured via xinetd, do disable it by editing the files under /etc/xinetd.d. Once this is done, restart xinetd and then try restarting  IMAP/POP3 Server (Courier-IMAP) from Plesk Service Management. It should work fine.

In the following example, check line number 3 (disable = yes) which disables the service under xinetd.

service pop3
{
disable = yes
flags = NODELAY
socket_type = stream
wait = no
user = root
server = /usr/bin/tcp-env
server_args
= -R -f /usr/lib/courier-imap/etc/

pop3d /usr/lib/courier-imap/sbin/pop3login /usr/lib/courier-imap/libexec/authlib/authpsa /usr/lib/courier-imap/bin/pop3d
Maildir
log_type = FILE /var/log/pop3d.log
log_on_success = PID HOST EXIT DURATION
log_on_failure = HOST ATTEMPT
}

Jul 30

I’m on gOS test drive to see if I can find an OS which does not require much customizations on my laptop. You will fall in love with gOS if you’re addicted to google applications. More updates in coming posts.

PS: gOS is nowhere linked to Google Inc. and its partners

Preliminary investigations says that gOS still requires some customizations which I require….

Jul 28

It took one and a half month to hit this score…

Vehicle is now ready for first service at ODI: 1325 km

Jul 27

Hey STOP! , Its not a game. They are cutting down the tree…..

:( It happened while I was writing my exam today. Place : Jyothi nivas college play ground.

Jul 26

Damn, foolish act of the man continues. Ahmadabad is now under terror strike. Entire country is high alert.

Ahmadabad serial blast

Ahmadabad serial blast : Image source : NDTV.com

Jul 26

I couldn’t fix this issue for a while now and I was offline on Skype for more than a month now.

skype: symbol lookup error: /usr/lib/libQtNetwork.so.4: undefined symbol: _ZN14QObjectPrivate15checkWindowRoleEv

I tried a lot fixing the above issue by reinstalling the libQT4 libraries, even tried downgrading them to previous version along with Skype. But no luck.

Today I just thought of fixing this issue while studying for my exams. While searching for the similar error in google, found that there have been many other who are affected by this problem.Solution was also found to be documented in Ubuntu website.

You need to remove the line /opt/nessus/lib from  /etc/ld.so.conf and run sudo ldconfig in the console or try the static Skype version available for download to resolve this issue.

Peace.

Jul 26

Its not yet over. Yesterday serial bomb blasts shook the entire city and today an another live bomb was found near the shopping mall where I used to hang around last year. “The Forum” is one of the famous shopping mall in Koramangala. Its very close to the locations where in bombs exploded yesterday.

An unidentified 20 year old guy was found to have been placing the bomb in footpath near the shopping mall. Authorities are in search of this man wearing a Red T-Shirt.

Its all a mess in the city. Traffic jams, mobile networks have been jammed, IT companies hit along with those who give daily wages to so many people around the city. Though life started off as usual this morning, terror is still on in mind of Bangalorians. It used to be a green and fun filled city. You can say now its also filled with low-intensity bombs to horrify common man.

Why people are playing around with the lives of others? Whats behind all this? Terror is not the solution for all. Live and let us live peacefully.

News sources : Hindu NDTV

Image source : NDTV

Jul 25

Sys Admin go crazy when they are unable to run some commands. Recently I found that people have been facing lots of issues while copying huge files over to a remote server via “scp” command.  This mainly happens when the connections gets closed and the scp command does not restart itself once the connection is established again with the remote server. SCP also fails to transfer file when there are limits set on server for transfers at various levels.

To over come this issue, we could use rsync command. It resumes the download process unlike scp.

Here is how rsync command looks :

rsync --partial --progress --rsh=ssh --archive <source file> <destination>

if you don’t want to recall all the options mentioned above and  would like to continue using a command which is just like scp, continue reading.

I just created an alias called rscp (resumable scp) with the options mentioned above.

alias rscp="rsync --partial --progress --rsh=ssh --archive"

You can  execute the above line in the console before using the rscp command to transfer the files. Or you can even put this inside .profile or .bashrc file of your home directory. (Do ensure that you open a new shell before you use the command if you’re adding the alias line in .bashrc or .profile as these files will be read when a new shell is opened)

Now its time to use your alias :

rscp <sourcefile> <destination>

The transfer will not break like earlier.  Let me know if you still continue facing error with this.

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