Documentation: https://support.mailcleaner.net/boards/3/topics/51

InfoBox: https://support.mailcleaner.net/boards/3/topics/48

Read This: https://victorlclopes.medium.com/how-to-manage-and-customize-mailcleaner-2020-01-c13bbae12745

Default Settings: https://www.mailcleaner.net/antispam/demo.html

The InfoBox feature lets you communicate with admins and users.

https://support.mailcleaner.net/boards/3/topics/48

cd /usr/mailcleaner/www/guis/admin/public/templates/
cp -avr default yourtemplate
mv default default.orig
mv yourtemplate default

vim default/css/login.css

#mclogo
  background-color:

https://support.mailcleaner.net/boards/3/topics/42

MailCleaner Admin → Domains → Domain Default Settings → Templates

cd /usr/mailcleaner/templates/summary
cp -avr default yoursummarytemplate

• banner.jpg

https://support.mailcleaner.net/boards/3/topics/57

cd /usr/mailcleaner/www/user/htdocs/templates/
cp -avr default yourtemplate
vim /usr/mailcleaner/www/user/htdocs/templates/yourtemplate/footer.tmpl

• login.tmpl
• login.css
• navigation.css

It's probably best to blacklist them.

https://support.mailcleaner.net/boards/3/topics/93

https://support.mailcleaner.net/boards/3/topics/95

https://support.mailcleaner.net/boards/3/topics/63#Sender-Rule-Formatting

https://support.mailcleaner.net/boards/3/topics/94

https://support.mailcleaner.net/projects/support-user/wiki/SPF_Sender_Policy_Framework

https://support.mailcleaner.net/boards/3/topics/64-spf-configuration

You can adjust the SPF rule MC_SPF_SOFTFAIL by adding points or reducing points.

Configuration → Domains → domain.tld → SpamC rules adjustments

vim /usr/mailcleaner/share/spamassassin/99_custom_rules_scores.cf

/usr/local/bin/spamassassin --siteconfigpath=/usr/mailcleaner/share/spamassassin/ -t -d < spam_sharepoint.eml

/usr/mailcleaner/share/spamassassin/99_custom_rules_sharepointonline.cf

I added sharepointonline.com as a freemail domain and added many points, so I changed this score to zero.

describe SENT_FROM_SHAREPOINT Add points to messages from sharepointonline.com
header   SENT_FROM_SHAREPOINT From:addr =~ /no-reply\@sharepointonline\.com$/i
score    SENT_FROM_SHAREPOINT 2.0

/usr/mailcleaner/share/spamassassin/99_custom_rules_scores.cf

score    DCC_CHECK       1.5
score    ARC_SIGNED      0.001
score    KHOP_BIG_TO_CC  2.0
score    RCVD_IN_UCEPROTECT3  1.0

score    FREEMAIL_FROM   3.5
score    FREEMAIL_ENVFROM_END_DIGIT  1.0
score    FREEMAIL_REPLYTO_END_DIGIT  1.0
score    FREEMAIL_FORGED_REPLYTO  3.5
score    FREEMAIL_REPLYTO  3.5
score    FREEMAIL_REPLY  3.5
score    MC_MANY_FREEMAIL_RCPT  3.5

rawbody   GOOGLE_APIS   /https?:\/\/storage\.googleapis\.com/i
score     GOOGLE_APIS   3.0
describe  GOOGLE_APIS   Has a hyperlink that points to Google APIs

header    DOMAIN_NUM    From =~ /\@.*\d.*\d.*/
score     DOMAIN_NUM    2.0
describe  DOMAIN_NUM    Domain name has 2 or more numbers

header    LONG_SUBJECT  Subject =~ /.{120,}/
score     LONG_SUBJECT  2.0
describe  LONG_SUBJECT  Subject line is very long

header    EMPTY_SUBJECT Subject =~ /^$/
score     EMPTY_SUBJECT 1.5
describe  EMPTY_SUBJECT Subject header exists but is empty

header    ONMICROSOFT_FROM From =~ /onmicrosoft\.com/i
score     ONMICROSOFT_FROM 3.0
describe  ONMICROSOFT_FROM From header contains onmicrosoft.com domain