By December 29, 2018

Inside OpenKB’s lab.


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By December 27, 2018

Error H.264 (High Profile) decoder is required to play the file, but is not installed. H.264 or MPEG-4 Part 10, Advanced Video Coding (MPEG-4 AVC) is a block-oriented motion-compensation-based video compression standard. As of 2014, it is one of the most commonly used formats for the recording, compression, and distribution of video contentH Solution on Fedora


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By December 21, 2018

Panic: file mail-index-sync-keywords.c: line 227 (keywords_update_records): assertion failed: (data_offset >= sizeof(struct mail_index_record)) Solution The error can be fixed by removing the user file under spool directory. In our case the path was /var/spool/mail Then rm -rf <user>


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By November 11, 2018

Centos 7X Enable FTP TLS Reference https://linuxconfig.org/setup-secure-proftpd-server-on-centos-7-with-tls Set the port range in /etc/proftpd.conf echo “PassivePorts 49152 65534″ >> /etc/proftpd.conf Open the Firewall ports firewall-cmd –add-port=49152-65534/tcp –permanent firewall-cmd –reload Validation firewall-cmd –list-ports Update the options in /etc/sysconfig/proftpd From PROFTPD_OPTIONS=”” To PROFTPD_OPTIONS=”-DTLS” Verify TLS has been setup in /etc/proftpd.conf TLSEngine on TLSRequired on TLSRSACertificateFile /etc/pki/tls/certs/proftpd.pem TLSRSACertificateKeyFile /etc/pki/tls/certs/proftpd.pem


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By November 11, 2018

Error: Mailbox access error: Panic: file mail-index-sync-keywords.c: assertion failed Cause Corrupted Dovecot index file. Resolution Connect to the server using SSH. Move the file /var/qmail/mailnames/example.com/john.doe/Maildir/dovecot.index: # cd /var/qmail/mailnames/example.com/john.doe/Maildir/ # mv dovecot.index{,.back}


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