Authentication protocols
Hosted email and privacy
Mailman for email lists
MTA - Mail Transfer Agent, send email internal and / or external
Sending email via the cli or a script
SuperTool: MX record, DNS, blacklist and SMTP diagnostics in one integrated online tool

Using a webmail client prevents the leakage of $HOSTNAME, $USER and $UID

• alpine (pine) (ncurses, console, based)
• mutt (console based)
• neomutt is an enhanced version of mutt which includes additional features and improvements for usability.
• sup-mail (console based) can handle and search fast in a lot of email
• Sylpheed (Graphical)
• Thunderbird (Graphical)

• gnus
• mew

• Roundcube
• Squirrelmail

Mox is a modern, secure, all-in-one email server

Mailing list management software (MLM)
On Wikipedia

• ezmlm. Seems more or less abandoned. Use mlmmj in stead
• mailman3 69 MB package size
• mlmmj Niet in de Debian repository. 455 kB zip file
  • Based on ezmlm
  • Code. Activiteit
  • Achtergrond info: bugs.debian.org
• Nuevomailer, commercieel
• sympa. 324 MB, most lean 127 MB, package size

Which SMTP port¹⁾, understanding ports 25, 465 and 587

Linux mailx command
Emailing program output automatically with mailx

Run

base64 -d TheMailfile

mblaze: Utilities to deal with Maildir

Like executable programs

• Rename the program to somename.txt
• Try zipping the program to somename.txt
• Try to convert the program to base64

(Manual) setup for webhosting in Direct Amin

Mail folders in mbox format: use the --mbox switch
Maildirs use a trailing slash: Maildir/cur/

Make sure the mailboxes exist. Put some ham- and spammail in them to test

required_score 3.0
rewrite_header subject ***SPAM***

report_safe     0

sa-learn --spam ~/Maildir/spam/
sa-learn --ham ~/Maildir/cur/
sa-learn --ham ~/Maildir/inbox/
sa-learn --ham ~/Maildir/ham/

More on training

Apache documentation
sa-learn man page
Spamassassin training
Anti spam from Paul Graham
14.4.5 SpamAssassin Configuration Examples

More info on push and poll email

More info on: K-9 mail classes
To set which classes are shown when

1. Goto the account overview
2. Long press on an account until a context menu appears
3. Tab on Account settings
4. Tab on Folders
   1. Auto expand folder: None
   2. Tab on Folders to display: 1st and 2nd Class folders
   3. Show only subscribed folders: Off
   4. Move/copy destination folders: All
   5. Folders to search: All
5. Make a selection for your needs
6. Repeat for other accounts

To set the classes for a mail folder:

1. Goto the account overview
2. Tab on a account. This brings you in the Inbox of the account
3. Tab on the K9-mail icon in the upper left corner. This brings you in the folder view of the account
4. Long press on a folder
5. Select Folder sSettings
6. Make your settings
7. Tab back on the bottom of the display to go back to the folder overview of the account
8. Continue with the next folder
9. Repeat 4 until 9 until all folders are done
10. Tab back on the bottom of the display to go back to the account overview
11. Select the next account / item 2 of this list

We set (and also the Show in top group and Unify settings)

Manually entering multiple email addresses and sending that email does not work. The issue is opened in 2018 but still not resolved
Spaces, comma, semicolon as a separator do not work. You get “Error parsing address!” The separator character is not added to the addresses. An other error message you can get is: “Recipient field contains incomplete input!”

Resending an email, to an other recipient, does not seem to be possible

Solution:

• Copy the blob at the end of the email to /tmp/blob.txt
• Run cat /tmp/blob.txt | base64 --decode | less
• Now you should be able to read the contents.

Main subjects on this wiki: Linux, Debian, HTML, Microcontrollers, Privacy

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