Exim IP based authentication (DirectAdmin)

Log in to Spam Experts, ensure the IP address is added as an authenticating method by following the Add an Outgoing User > Authenticating IP or Range instructions
1. When adding the Authenticating IP, ensure the correct limits are set matching your traffic volumes
Open the /etc/exim.conf file

Add the following in the Routers section (after the begin routers line):

spamexperts_smarthost_router:
driver = manualroute
domains = ! +local_domains
ignore_target_hosts = 127.0.0.0/8
condition = "${perl{check_limits}}"
# Exclude null sender messages from relaying via the smarthost
condition = ${if or {{!eq{$sender_address}{}} {!eq{$sender_host_address}{}}}}
headers_add = ${if !eq{$original_domain}{$domain}{X-Forwarded-For: $original_local_part@$original_domain}}
headers_add = X-AuthUser: $authenticated_id
transport = spamexperts_smarthost_transport
route_list = $domain SMARTHOST::587
no_more

You MAY have to comment "lookuphost:" router depending on your configuration

Add the following in the transports section (after begin transports):

spamexperts_smarthost_transport:
driver = smtp
# In-case your server continues to send outgoing over port 25 please add the below line
port = 587
hosts_require_tls = SMARTHOST

Finally restart Exim
If you are signing with DKIM on your Direct Admin server you may need to add the following line under hosts_require_tls
```
.include_if_exists /etc/exim.dkim.conf
```

Disclaimer: This documentation may contain references to third party software or websites. N-able has no control over third party software or content and is not responsible for the availability, security, or operation, of any third-party software. If you decide to utilize a release involving third-party software, you do so entirely at your own risk and subject to the applicable third party’s terms and conditions of the use of such software. No information obtained by you from N-able or this documentation shall create any warranty for such software.