mail

Check postfix queue

Either check for file presence in /var/spool/postfix
tree /var/spool/postfix

or by runnig
postqueue -p

Check for records
amavisd-new showkeys

Add a new one
amavisd-new genrsa /var/lib/dkim/new_domain.com.pem 1024

Add to amavisd config
editor /etc/amavis/conf.d/50-user

dig -t txt dkim._domainkey.domain.tld

Quick hack on how to set certificates right on iRedmail

Notes written after a full iredmail app recovery

System setup:
Debian 9 Stretch, MariaDB, Iredmail v0.9.9, iRedAdmin v0.9.3 (LDAP), Nginx, Lets encrypt, Icinga2

Use this configuration to apply a Certificate to complete set for mail services

Certificate Files
After obtaining the cert, you will have the following PEM-encoded files:

When email are ending UP you should check google postmaster tools.

Add there a domain
update txt record on dns server
verify after approximate 60 minutes

In order to copy mail from mail mailbox to another via IMAP

FIrst install IMAPCOPY from git

https://github.com/imapsync/imapsync.git

Follow instruction from readme

This way you send file directly from command line
echo "body" | mutt -a "/path/to/file" -s "subject" -- name@hostname

Install Postfix
aptitude install postfix

configure postfix/main.cf
# Handing off local delivery to Dovecot's LMTP virtual_transport = lmtp:unix:private/dovecot-lmtp