README.md

Outlook 2013

• Root: "Inbox"
• to recognize standard folder names delete .pst/.ost file after account setup
• (Outlook 2007) empty folder subscription, see: mail/courier-outlook-subscribe-bug.sh

Open winmail.dat

https://github.com/Yeraze/ytnef

See: repo/ytnef.deb

MIME: application/ms-tnef

Set up Google Apps mailing

https://toolbox.googleapps.com/apps/checkmx/

Mail account migration

see: mail/imapsync OVH ImapCopy OfflineIMAP

Send all messages in an mbox file to an email address

see: mail/mbox_send2.py

Email sending and receiving

• SSL?
• headers: From, from name, To, Reply-to, Return-path, SMTP "MAIL FROM:"

Courier catchall address

http://www.courier-mta.org/makehosteddomains.html http://www.courier-mta.org/dot-courier.html

echo "|pipe/command" > /var/mail/domain.net/user/.courier-foo-default

IMAP PLAIN authentication

D0 CAPABILITY D1 AUTHENTICATE PLAIN echo -en "\0USERNAME\0PASSWORD" | base64 D2 LOGOUT

Online email tests

• https://www.mail-tester.com/
• mailtest@unlocktheinbox.com https://unlocktheinbox.com/resources/adsp/
• checkmyauth@auth.returnpath.net http://www.returnpath.com/solution-content/dmarc-support/what-is-dmarc/
• https://winning.email/checkup/

Email forwarding (srs)

https://couriersrs.com/ https://github.com/szepeviktor/couriersrs see: http://szepeviktor.github.io/ Create users SRS0 and SRS1.

echo "|/usr/bin/couriersrs --reverse" > /etc/courier/aliasdir/.courier-SRS0-default
echo "|/usr/bin/couriersrs --reverse" > /etc/courier/aliasdir/.courier-SRS1-default

Spamassassin test and DKIM test

spamassassin --test-mode -D < msg.eml
# For specific tests see: man spamassassin-run
spamassassin --test-mode -D dkim < msg-signed.eml
opendkim -vvv -t msg-signed.eml

Sender ID (From:)

• http://en.wikipedia.org/wiki/Sender_ID
• http://tools.ietf.org/html/rfc4407#section-2
• PRA: Resent-Sender > Resent-From > Sender > From > ill-formed
• http://www.appmaildev.com/

SPF (HELO, MAIL FROM:)

• setup
• check
• monitor host -t TXT <domain>

DKIM

• RFC 6376
• setup http://www.tana.it/sw/zdkimfilter/
• check
• monitor

ADSP

An optional extension to the DKIM E-mail authentication scheme.

Domain Keys

?

SenderID

?

DMARC

Specs: https://datatracker.ietf.org/doc/draft-kucherawy-dmarc-base/?include_text=1

• setup https://unlocktheinbox.com/dmarcwizard/
• check
• monitor host -t TXT <domain>

Headers

• List-Unsubscribe:
• Precedence: bulk
• Return-Path:, Reply-to:, From:, To:, Subject:
• SMTP "MAIL FORM: from@addre.ss"

Bulk mail

Musts

• link to online version (newsletter archive)
• who (name and email address) is subscribed
• sender's contact details (postal address, phone number)
• unsubscribe link
• HTML and plain payload
• Precedence: bulk header
• https://support.google.com/mail/answer/81126

Elements

• From: "Firstname from Company"
• From address SPF: include:servers.mcsv.net
• Subject: ...)
• Short preview line on top of the message
• Main hader line
• Subheader line
• Section: image + title + description + call2action https://litmus.com/subscribe

White lists

• https://www.dnswl.org/?page_id=87
• .

Kitchen sink

• echo > /etc/courier/aliasdir/.courier-kitchensink
• alias: any.address@any-domain.net: kitchensink@localhost

Scan Class C network

for I in $(seq 1 255); do host -t A 1.2.3.${I}; done

Email tests

• http://www.mail-tester.com/ by Mailpoet
• mailtest@unlocktheinbox.com
• https://www.unlocktheinbox.com/bulkemailvalidator/

Email templates

• https://litmus.com/blog/go-responsive-with-these-7-free-email-templates-from-stamplia
• https://www.klaviyo.com/