Exchange Server
![exchange server 2013 2016 2019](../../for-email-admins/email-server-settings/exchange-server/images/exchange20132016.png)
EAC
(Exchange Admin Center)
![exchange server 2013 2016 2019 - mailflow - send connectors](../../for-email-admins/email-server-settings/exchange-server/images/exchange20132016-mailflow-sendconnectors.png?classes=border,shadow)
Mail Flow > Send Connectors
[+] New send connector
![exchange server 2013 2016 2019 - new send connector](../../for-email-admins/email-server-settings/exchange-server/images/exchange20132016-newsendconnector.png?classes=border,shadow)
new send connector
*Name:
Internet Mail
Type:
[x] Internet (For example, to send internet mail)
[next]
![exchange server 2013 2016 2019 - edit smart host](../../for-email-admins/email-server-settings/exchange-server/images/exchange20132016-editsmarthost.png?classes=border,shadow)
edit smart host
Specify a fully qualified domain name (FQDN), IPv4 address, or IPv6 address:
rsxxx.realsender.com
[save]
![exchange server 2013 2016 2019 - new send connector](../../for-email-admins/email-server-settings/exchange-server/images/exchange20132016-newsendconnector-networksettings.png?classes=border,shadow)
new send connector
*Network settings:
[x] Route mail through smart hosts
(unchanged)
[next]
![exchange server 2013 2016 2019 - new send connector - authentication](../../for-email-admins/email-server-settings/exchange-server/images/exchange20132016-newsendconnector-authentication.png?classes=border,shadow)
new send connector - authentication
Smart host authentication:
[x] Basic authentication
[x] Offer basic authentication only after starting TLS
*User name:
(the one we sent you)
*Password:
(the one we sent you)
[next]
![exchange server 2013 2016 2019 - new send connector - routing](../../for-email-admins/email-server-settings/exchange-server/images/exchange20132016-newsendconnector-routing.png?classes=border,shadow)
new send connector - routing
*Address space:
TYPE: SMTP
DOMAIN: *
COST: 1
[next]
![exchange server 2013 2016 2019 - new send connector - which exchange server](../../for-email-admins/email-server-settings/exchange-server/images/exchange20132016-newsendconnector-whichexchangeserver.png?classes=border,shadow)
new send connector - which exchange server
[EXCHANGE]
[add ->] EXCHANGE
[ok]
![exchange server 2013 2016 2019 - new send connector - finish](../../for-email-admins/email-server-settings/exchange-server/images/exchange20132016-newsendconnector-finish.png?classes=border,shadow)
[finish]
Office 365
![Office 365](../../for-email-admins/email-server-settings/office-365/images/office.png)
![office 365 - sign in](../../for-email-admins/email-server-settings/office-365/images/office365-signin.png)
Microsoft Office 365 Admin center
![office 365 - admin](../../for-email-admins/email-server-settings/office-365/images/office365-admin.png)
Left-menu > Admin
![office 365 - show all](../../for-email-admins/email-server-settings/office-365/images/office365-showall.png)
Microsoft 365 admin center > … Show all
![office 365 - admin centers - exchange](../../for-email-admins/email-server-settings/office-365/images/office365-admincenters-exchange.png)
Microsoft 365 admin center > Admin centers > Exchange
![office 365 - mail flow > connectors](../../for-email-admins/email-server-settings/office-365/images/office365-mailflow-connectors.png)
Exchange admin center > Mail flow > Connectors
![office 365 - add a connector](../../for-email-admins/email-server-settings/office-365/images/office365-addaconnector.png)
Connectors > Add a connector
New connector
![office 365 - new connector](../../for-email-admins/email-server-settings/office-365/images/office365-newconnector.png)
Connection from: [x] Office 365
Connection to: [x] Partner organization
[Next]
Connector name
![office 365 - connector name](../../for-email-admins/email-server-settings/office-365/images/office365-connectorname.png)
This connector enforces routing and security restritions for email messages sent
from Office 365 to your partner organization or service provider.
Name: RealSender
What do you want to do after connector is saved?
[x] Turn it on
[Next]
Use of connector
![office 365 - use of connector](../../for-email-admins/email-server-settings/office-365/images/office365-useofconnector.png)
Specify when you want to use this connector.
[x] Only when I have a transport rule set up that redirects messages to this connector
[Next]
Routing
![office 365 - routing](../../for-email-admins/email-server-settings/office-365/images/office365-routing.png)
How do you want to route email messages?
Specify one or more smart hosts to which Office 365 will deliver email messages.
A smart host is an alternative server and can be identified by using a fully qualified domain name (FQDN) or an IP address.
[x] Route email through these smart host
rsxxx.realsender.com [+]
[Next]
Security restrictions
![office 365 - security restrictions](../../for-email-admins/email-server-settings/office-365/images/office365-securityrestrictions.png)
How should Office 365 connect to your partner organization's email server?
[x] Always use Transport Layer Security (TLS) to secure the connection (recommended)
Connect only if the recipient's email server certificate matches this criteria
[x] Issued by a trusted certificate authority (CA)
[Next]
Validation email
![office 365 - validation email](../../for-email-admins/email-server-settings/office-365/images/office365-validationemail.png)
Specify an email address for an active mailbox that's on your partner domain.
You can add multiple addresses if your partner organization has more than one domain.
yourname@yourdomain.com [+]
[Validate]
Validation successful
![office 365 - validation successful](../../for-email-admins/email-server-settings/office-365/images/office365-validationsuccessfull.png)
[Validate]
Validation in progress...
Validation successful
> Task Status
> Check connectivity to 'rsxxx.realsender.com' Succeeded
> Send test email Succeeded
[Next]
Review connector
![office 365 - review connector](../../for-email-admins/email-server-settings/office-365/images/office365-reviewconnector.png)
Mail flow scenario
From: Office 365
To: Partner organization
Name
RealSender
Status
Turn it on after saving
Use of connector
Use only when I have a transport rule set up that redirects messages to this connector.
Routing
Route email messages through these smart hosts: rsxxx.realsender.com
Security restrictions
Always use Transport Layer Security (TLS) and connect only if the recipient’s
email server certificate is issued by a trusted certificate authority (CA).
[Create connector]
Zimbra Collaboration
![zimbra admin console](../../for-email-admins/email-server-settings/zimbra-collaboration/images/zimbra-adminconsole.png)
Zimbra Collaboration
(network edition / open source)
>
Admin Console
![zimbra admin - configure - global settings - mta](../../for-email-admins/email-server-settings/zimbra-collaboration/images/zimbraadmin-configure-globalsettings-mta.png)
Zimbra Administration
>
Configure
>
Global Settings
>
MTA
![zimbra admin - mta - relay mta for externa ldelivery](../../for-email-admins/email-server-settings/zimbra-collaboration/images/zimbraadmin-mta-relaymtaforexternaldelivery.png)
Authentication
Enable authentication [ ]
TLS authenticaton only [ ]
Network
Web mail MTA Hostnames: localhost
Web mail MTA Port: 25
Relay MTA for external delivery: rsxxx.realsender.com : 25
Relay MTA for external delivery (fallback): rsxxx.realsender.com : 25
Please [inform our support team](/we-deliver-your-emails/contacts) that you're using Zimbra Collaboration,
so that we configure our servers to accept the connection
without any further setup on your side
(no need to make any change to the Zimbra's postfix smtp settings)