create a mailbox
groupadd mailusers useradd -g mailusers -m -s /sbin/nologin USER #-k /dev/null #-s /bin/false #-s /dev/null #passwd USER
remove a mailbox and loose its data
userdel -r USER
make sure the unix socker for SPF is up and running
netstat -an | grep policy
apply minor config change
postfix check && echo ok postfix reload
restart
which postfix postfix stop ps auxww | grep master postfix check && echo ok postfix start
tail -100 -F /var/log/maillog /etc/rc.d/postfix restart
and in case this is a custom build
vi /etc/rc.local /usr/sbin/postfix start && echo -n postfix330 /usr/sbin/postconf -d | grep version
tail -F /var/log/mail.* systemctl restart psotfix
postsuper -d ALL
How to delete mail queue in Postfix https://sharadchhetri.com/2014/02/06/how-to-delete-mail-queue-in-postfix/
Deal with spam that eventually came through the hereby protections (wow, so that’s a clean spam!): look at the headers what fqdn connected to your MX and reject it manually so it doesn’t spam you again,
vi /etc/postfix/client_access compute.amazonaws.com REJECT compute.amazonaws.com is identified as a spam domain .compute.amazonaws.com REJECT compute.amazonaws.com is identified as a spam domain postmap /etc/postfix/client_access
unblock your server from MS’s blacklists:
How to Remove Your IP from the Hotmail Blacklist https://www.rackaid.com/blog/hotmail-blacklist-removal/
Microsoft’s Sender Information Form https://support.live.com/eform.aspx?productKey=edfsmsbl3&ct=eformts&wa=wsignin1.0&scrx=1
register to live.com and define your IP into SNDS: https://postmaster.live.com/snds/
then file a request to un-block your IP: https://support.microsoft.com/en-us/getsupport?oaspworkflow=start_1.0.0.0&wfname=capsub&productkey=edfsmsbl3