i'm just in a the process  of migrating a froxlor managed couriermail server to a new froxlor/debian9/postfix/dovecot mail server

there are hundreds of gigabyte imapmap emails with hundreds of accounts.

to make this a bit less painfully to move

i started to created a small email migration script for the beginning

https://github.com/veto64/sync_froxlor

 

requirements:

emails passwords must be plain

latest docker

remote access to the server

 

Ehm, there is https://wiki.dovecot.org/Migration/Courier

thanks,

courier-dovecot-migrate.pl

i will try to use for  another server

is there any better way to prevent spamming.? there is a virus poping out in my system called vigrx plus what is the solution

 

dovecot is not there to prevent spam...if you need virus/malware removal, google for a solution or hire a good admin

Quote

 

i use postgrey and   SpamAssassin with  postfix

my notes may give you the hint:

postgrey:

http://myridia.com/dev_posts/view/706)

 

spamassassin

http://myridia.com/dev_posts/view/1238

Quote

http://wiki.apache.org/spamassassin/IntegratedSpamdInPostfix

1) Create a bash script to receive e-mail from Postfix and pipe it to SpamAssassin for rewriting. Then forward the rewritten version to Postfix's sendmail implementation:

#!/bin/bash
#
# spamfilter.sh
#
# Simple filter to plug SpamAssassin into the Postfix MTA
#
# Modified by Jeremy Morton
#
# This script should probably live at /usr/bin/spamfilter.sh
# ... and have 'chown root:root' and 'chmod 755' applied to it.
#
# For use with:
#     Postfix 20010228 or later
#     SpamAssassin 2.42 or later

# Note: Modify the file locations to suit your particular
#       server and installation of SpamAssassin.
# File locations:
# (CHANGE AS REQUIRED TO SUIT YOUR SERVER)
SENDMAIL=/usr/sbin/sendmail
SPAMASSASSIN=/usr/bin/spamc

logger <<<"Spam filter piping to SpamAssassin, then to: $SENDMAIL $@"
${SPAMASSASSIN} | ${SENDMAIL} "$@"

exit $?

2) Ensure the newly-created /usr/bin/spamfilter.sh has correct permissions (0755), and is owned by root:root.

3) Modify the /etc/postfix/master.cf file; first, change the first 'smtp' line of the file to:

smtp      inet  n       -       -       -       -       smtpd -o content_filter=spamfilter

Then, add the following (a call to our newly-created spamfilter script) at the end:

spamfilter
          unix  -       n       n       -       -       pipe
   flags=Rq user=spamd argv=/usr/bin/spamfilter.sh -oi -f ${sender} ${recipient}

 

Have a look at http://www.scrolloutf1.co I use two of these as mx0 & mx1. They are reliable and fairly easy to get up and running.

You would need to set them up with sticky records, then point your domain name(s) MX records  to use these. From within Scrollout you then forward the email that is permitted to your Froxlor server.