# ContentStore Mail Server (SMTP) Dashboard Settings

On the Settings tab, you can configure the ContentStore Mail Server (SMTP).

## Basic Settings

Setting | Description
--- | ---
Host name | The server name of the ContentStore Mail Server (SMTP). This value is read-only.
Upload the certificate | Browse to the SSL certificate and upload it to the ContentStore Mail Server (SMTP). The certificate must include the fully qualified domain names of the endpoints to which the SMTP clients connect. Usually, this is the SMTP host name. The supported format is PKCS#12 (.p12 or .pfx) and it must contain both public key certificates and private keys. Important If you use Microsoft 365 with Exchange (Exchange Online), after you upload the SSL certificate and enable TLS for SMTP, you must enable TLS on the Send connector. For more information, see the Microsoft TechNet article: "Set up connectors for secure mail flow with a partner organization": https://technet.microsoft.com/en-us/library/dn751021(v=exchg.150).aspx.
Certificate password | The SSL certificate password.
Use TLS for SMTP | When this check box is selected, communications are encrypted using Transport Layer Security (TLS). This is the recommended setting. When the check box is cleared, communications are not encrypted.
SMTP Port | The SMTP communication port. By default, it is 25. This port must be open.
ContentStore Mailbox cache location | Messages received by the ContentStore Mail Server (SMTP) are stored in this folder before they are processed by the ContentStore Mailbox archiving job. If the Delete archived messages after successful archive operations option in the Exchange journal plan is enabled, messages are deleted from this folder after the archive job completes. By default, this location is in the software installation path. You can change the path to another location, which can be a local path or a shared network location. If you use a shared network location, you configure it first. For best performance, follow these guidelines: Locate this folder on a storage device that has a fast access speed. Do not locate the folder on a system drive. The location should have enough space to hold two-week's worth of messages. Calculate this space based on the amount of email that you expect to be received on the Exchange server. Exclude the folder path from antivirus scanning.
Accept a connection from | The SMTP server accepts only the messages from the Exchange servers that are configured in this list. If messages come from Exchange servers that are not on the list, the messages are rejected. If you change an Exchange server IP address, or if you add Exchange servers to the Send connector, make sure that you add the IP addresses to this list. For information about Microsoft 365 with Exchange, see the Microsoft TechNet article, "Microsoft 365 URLs and IP address ranges":

## Advanced Settings

### ContentStore Mailbox

Setting | Description
--- | ---
Display Name | The display name of the contact.
SMTP Address | The address of the contact in the format name@domain.com.

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