- 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
https://toolbox.googleapps.com/apps/checkmx/
see: mail/imapsync
- SSL?
- headers: From, from name, To, Reply-to, Return-path, SMTP "MAIL FROM:"
http://www.courier-mta.org/makehosteddomains.html
- 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/
spamassassin --test-mode -D < msg.eml
# specific test, see: man spamassassin-run
spamassassin --test-mode -D dkim < msg-signed.eml
opendkim -vvv -t msg-signed.emlhttps://support.google.com/mail/answer/81126?hl=en
- 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/
- setup
- check
- monitor
- RFC 6376
- setup http://www.tana.it/sw/zdkimfilter/
- check
- monitor
Specs: https://datatracker.ietf.org/doc/draft-kucherawy-dmarc-base/?include_text=1
- setup https://unlocktheinbox.com/dmarcwizard/
- check
- monitor
host -t TXT <domain>
- List-Unsubscribe:
- Precedence: bulk
- Return-Path:, Reply-to:, From:, To:, Subject:
- SMTP "MAIL FORM: from@addre.ss"
- online version
- who (email address) is subscribed
- contact
- unsubscribe link
- HTML and plain payload
echo > /etc/courier/aliasdir/.courier-kitchensink- alias:
any.address@any-domain.net: kitchensink@localhost
for I in $(seq 1 255); do host -t A 1.2.3.${I}; done