Change the SMTP banners to use a specific domain according to IP and enable DKIM
UPDATED, since DirectAdmin 1.47 and currect version of custombuild, can now do this for you..
Updated exim to use the latest version and latest version exim.conf
cd /usr/local/directadmin/custombuild vi options.conf
Now, set custombuild to update exim:
exim=yes eximconf=yes
Update custombuild to use new settings and install latest version of exim
./build update ./build exim ./build exim_conf
For PHP mail, you need to add the following lines to the top of your /etc/exim.conf :
Ref: https://help.directadmin.com/item.php?id=257
untrusted_set_sender = * no_local_from_check
So now that's done. Edit directadmin conf to send mail from the user account's dedicated IP.
vi /usr/local/directadmin/conf/directadmin.conf
Add the following
add_domain_to_domainips=1 dkim=1
Restart DirectAdmin
SPF is added automatically by DirectAdmin, do not use the DEPRECATED dns_spf=1
service directadmin restart
DO NOT USE the updated DirectAdmin DKIM guide if you're using Exim 4.3 or greater: http://help.directadmin.com/item.php?id=569
Finally, run the directadmin task.queue
Do this for the first time:
echo "action=rewrite&value=domainips" >> /usr/local/directadmin/data/task.queue echo "action=rewrite&value=helo_data" >> /usr/local/directadmin/data/task.queue echo "action=rewrite&value=dkim" >> /usr/local/directadmin/data/task.queue
Do this if domain IPs become out of sync
echo "action=rewrite&value=domainips&empty=yes" >> /usr/local/directadmin/data/task.queue echo "action=rewrite&value=helo_data&empty=yes" >> /usr/local/directadmin/data/task.queue
Do this for a single domain
echo "action=rewrite&value=domainips&domain=DOMAIN.COM" >> /usr/local/directadmin/data/task.queue ### Removes previous values, and starts from scratch echo "action=rewrite&value=helo_data&ip=1.2.3.4" >> /usr/local/directadmin/data/task.queue /usr/local/directadmin/scripts/dkim_create.sh DOMAIN.COM
That should do it...
If your domain's DNS is hosted at an external DNS, such as the domain name registrar, then you need to copy/paste all the TXT records over to that DNS host manually
Change the PHP mail SMTP Sender banner
To Change the "Sender" info we have to do the following:
cd /usr/local/directadmin/data/templates/custom/ cp /usr/local/directadmin/data/templates/virtual_host2.conf /usr/local/directadmin/data/templates/custom/ cp /usr/local/directadmin/data/templates/virtual_host2_secure.conf /usr/local/directadmin/data/templates/custom/ sed -i 's/`USER`@`DOMAIN`/no-reply@`DOMAIN`/g' ./virtual_host2*.conf echo "action=rewrite&value=httpd" >> /usr/local/directadmin/data/task.queue /usr/local/directadmin/dataskq d
Now we add required lines to /etc/exim.conf at the very top of file:
local_from_check = false untrusted_set_sender = *
Restart exim.
service exim restart
OLD WAY
Click here to view the old method
Credit: http://forum.directadmin.com/showthread.php?t=36468&page=5
cd /etc/virtual vi domainips
Paste the following into /etc/virtual/domainips YOUR_DOMAIN:YOUR_DOMAIN_IP_ADDRESS
vi /etc/virtual/domainips
domaina.com:111.111.111.111 domainb.com:222.222.222.222 domainc.com:333.333.333.333
Now we do the reverse IP lookup. YOUR_DOMAIN_IP_ADDRESS:YOUR_SUB_DOMAIN.YOUR_DOMAIN
vi /etc/virtual/smtp_active_hostnames
Paste this into /etc/virtual/smtp_active_hostnames
111.111.111.111:mail.domain1.com 222.222.222.222:mail.domain2.com 333.333.333.333:mail.domain3.com
Next create /etc/virtual/helo_data
vi /etc/virtual/helo_data
Paste the following:
aaa.aaa.aaa.aaa: mail.domain1.com bbb.bbb.bbb.bbb: mail.domain2.com ccc.ccc.ccc.ccc: mail.domain3.com
Now edit your /etc/exim.conf again, and make sure the top of the file looks like the following
# proper SMTP sender START #
local_interfaces = 127.0.0.1 : 111.111.111.111 : 222.222.222.222 : 333.333.333.333
smtp_active_hostname = ${lookup{$received_ip_address}iplsearch{/etc/virtual/smtp_active_hostnames}{$value}}
smtp_banner = "$smtp_active_hostname ESMTP $tod_full"
no_local_from_check
untrusted_set_sender = *
# proper SMTP sender END #
Now we REPLACE the remote_smtp part in /etc/exim.conf with:
remote_smtp:
driver = smtp
interface = "${lookup{$sender_address_domain}lsearch{/etc/virtual/domainips}{$value}{aaa.aaa.aaa.aaa}}"
helo_data = "${lookup{$sending_ip_address}lsearch{/etc/virtual/helo_data}{$value}{$primary_hostname}}"
Restart exim
service exim restart