mail | Inodes

I just discovered Vim has spell checking. No more having to manually spell check in mutt with ispell when writing emails, Hurray!!

In your .vimrc file simply add

Bash

setlocal spell spelllang=en_au

Note: By default vim only installs en_us spell files. If you are running debian then there is a vim-spellfiles package. There is an ubuntu bug to do something about this as well. Since I’m using ubuntu I simply grabbed the en directory from ftp://ftp.vim.org/pub/vim/runtime/spell/ and dumped it in /usr/share/vim/vim71/spell

Vim will now highlight words it thinks are misspelled. The magic incarnations you will need are:

z= – Suggest alternatives for the word
zg – Add word to dictionary
zw – Remove word from dictionary

I use DSPAM to handle my spam checking and have been quite happy with it as it normally delivers >99.9% hit rate.

In the last few weeks the amount of spam in my INBOX had been getting progressively worse to the point where I noticed no spam whatsoever was making its way into my spam folder.

Looking through my logs I eventually found the following

Plaintext

May 10 10:03:03 fozzie dspam[30287]: Unable to find a valid signature. Aborting.
May 10 10:03:03 fozzie dspam[30287]: process_message returned error -5.  dropping message.

I process my spam by using a mutt macro which bounces emails to johnf-spam at inodes dot org. This then passes the email to DSPAM which reclassifies it. It does this by looking at a header it added to the email.

Plaintext

X-DSPAM-Signature: 464400d0223642194712985

However these were appearing in my INBOX as

Plaintext

X-Dspam-Signature: 464400d0223642194712985

I use procmail and a perl script to pre-process some of my email and it uses Mail::Internet which in turn uses Mail::Header. It bestows this piece of wisdom upon the world.

Perl

# attempt to change the case of a tag to that required by RFC822. That
# being all characters are lowercase except the first of each word. Also
# if the word is an `acronym' then all characters are uppercase. We decide
# a word is an acronym if it does not contain a vowel.

sub _tag_case
{

Now I can’t see where in RFC822 it specifies this but in section B.2 it does specify

Plaintext

Upper and lower case are not dis-tinguished when comparing field-names.

So on that basis I choose to blame DSPAM and applied the following diff

Diff

diff -ur dspam-3.8.0.orig/src/dspam.c dspam-3.8.0/src/dspam.c
--- dspam-3.8.0.orig/src/dspam.c        2006-12-13 02:33:45.000000000 +1100
+++ dspam-3.8.0/src/dspam.c     2007-05-11 16:25:11.000000000 +1000
@@ -2165,7 +2165,7 @@
           while(node_header != NULL) {
             head = (ds_header_t) node_header->ptr;
             if (head->heading && 
-                !strcmp(head->heading, "X-DSPAM-Signature")) {
+                !strcasecmp(head->heading, "X-DSPAM-Signature")) {
               if (!strncmp(head->data, SIGNATURE_BEGIN, 
                            strlen(SIGNATURE_BEGIN))) 
               {

Now to work out the best way to push that upstream.

Vim and spell checking

DSPAM case sensitivity