Dear All.

How to safely migrate all of my previous postfix configs and mailboxes to new server?

Please help.

Thanks & Regards
Winanjaya

What have you found and done so far?

Hi..
I plan to run these on old machine

export UGIDLIMIT=500
/etc/passwd
awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534)' /etc/passwd > /home/passwd.mig

/etc/group
awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534)' /etc/group > /home/group.mig

/etc/shadow
awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534) {print $1}' /etc/passwd | tee - |egrep -f - /etc/shadow > /home/shadow.mig

/etc/gshadow
cp /etc/gshadow /home/gshadow.mig

backup mailboxes dir
tar -zcvpf /tmp/home.tar.gz /home

then restore it on New machine

# Restore

cd /path/to/location
cat passwd.mig >> /etc/passwd
cat group.mig >> /etc/group
cat shadow.mig >> /etc/shadow
/bin/cp gshadow.mig /etc/gshadow

then extract mailboxes
tar -zxvf /path/to/location/home.tar.gz

then copy all /etc/postfix to new machine

never try it ..

and hoping someone else experienced on this before ..

what is your idea or comment or suggestion?