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    Creative Commons License
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    Thu, 12 Dec 2013


    /Linux/misc: Sending (Big) E-mails to Your Kindle

    I have a lot of interesting things stacking up in my e-mail client (RSS feeds, mailing lists, etc.) that I am not getting around to. Particularly difficult to get to are the long ones.

    Queue my Kindle, while on public transit....

    First copy the mail files to a temporary directory. (Personally, I use claws-mail and maildir, so that is as simple as copying the e-mails to there own folder, and then copying that folder in /tmp.)

    Then cd into that temporary directory, and strip out the text portions of those e-mails:

    munpack -t *

    This places the text portion of each maildir file into a file named "part{name-of-file}". Then add ".txt" to each file by running this script:

    for file in part*; do mv $file $file.txt; done

    Now import these txt files in calibre (tagging appropriately) and send them to your Kindle. (Note that this is probably only really worthwhile for BIG e-mails.)

    posted at: 04:01 | path: /Linux/misc | permanent link to this entry

    Mon, 02 Dec 2013


    /SW/Micro$soft: Windows Sucks

    So I last made daily use of a Microsoft operating system on my desktop around about '00. It was that pig Win98, which drove me right into the arms of Linux, and I have never looked back since. (And no, Macs do not even tempt me. OSX might have some really shiny apps, but as an OS it is inferior to Linux, IMO.)

    Fast forward to '13, and most or all of the damn banks in China insist on the use of Internet Explorer for their online banking. (Biting my tongue....) For various reasons, I am having to do this more and more, so thought it might be nice (and more secure) to be doing so on a legal, UP-TO-DATE, Win-something-or-other.

    I managed to get a real cheap (legal, licensed, unopened packaging) copy of Win7 off of Taobao. Installed it in a virtual machine under Linux, typed in the serial number and had it accepted. And Windows Update did not work. Dies with some kind of (standard for Microsoft) completely useless and unintelligible error message. Probably has something to do with my accidentally clicking through the license code screen, and then adding the code after the fact.

    And then I poured the rest of my afternoon down the drain, doing the Windows dance: tried a dozen different things, including an attempt to upgrade the same install from the same DVD image that failed (at the very end!) miserably. Finally I had to scrub the whole thing and start from scratch, being careful to give Microsoft it's little code at exactly the appointed time, and no other.

    Ten years later, Windows still sucks.

    posted at: 06:16 | path: /SW/Micro$soft | permanent link to this entry


    /Admin/email/postfix: Postfix and Opportunistic TLS Between Mail Servers

    Thanks to this thread[1] I was alerted to the feasability of having my server use TLS when sending and receiving e-mail over SMTP with other like-minded servers[2]. Which normally should include all of the big name free e-mail services. For Postfix, if this is not already the default (for me it was NOT the default for outgoing mail!) adding this:

    smtpd_tls_auth_only = yes
    smtpd_tls_security_level = may
    smtpd_tls_loglevel = 1
    smtp_tls_security_level = may
    smtp_tls_loglevel = 1

    to /etc/postfix/main.cf makes it happen. (And the first line instructs Postfix that mail clients authenticating with the server MUST use TLS.)

    I now see something like this in my mail log when connecting to gmail servers:

    postfix/smtp[32148]: Untrusted TLS connection established to gmail-smtp-in.l.google.com[74.125.136.27]:25: TLSv1.1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)

    [1] https://overbenny.wordpress.com/2013/11/14/wanted-most-secure-unencrypted-email-solution/
    [2] https://www.d7031.de/content/postfix-and-tls

    posted at: 03:20 | path: /Admin/email/postfix | permanent link to this entry