Thunderbird

Autoconfig

Thunderbird can auto-detect IMAP/SMTP/POP3 settings by looking at the domain's "autoconfig" DNS record.

CNAME record

A typical CNAME record looks like this:

• Name: autoconfig

• TTL: 3600

• RR Type: CNAME

• Target: host.name.com

BIND example:

Domain: autoconfig
TTL: 14440
Record Type: CNAME
Record: host.name.com.

Please make sure to add CNAME record in your domain's DNS zone to have the autoconfig feature in Thunderbird working.

CrossBox Standalone version exposes the autoconfig for Thunderbird clients at:

https://host.name.com/mail/config-v1.1.xml

host.name.com is the hostname of the server where CrossBox is running.

Manual Configuration

If you don't want to use the autoconfig feature, you can still configure IMAP/SMTP/POP3 settings in Thunderbird manually.

Server Information

Incoming Mail Server: host.name.com
Outgoing Mail Server (SMTP): host.name.com

Logon Information

Username: email@example.com

Advanced Settings

Incoming

IMAP

Recommended

Port: 993
SSL: SSL/TLS
Authentication: Normal password

Optional

Port: 143
SSL: STARTTLS or NONE
Authentication: Normal password

POP3

Recommended

Port: 995
SSL: SSL/TLS
Authentication: Normal password

Optional

Port: 110
SSL: STARTTLS or NONE
Authentication: Normal password

Outgoing

SMTP

Recommended

Port: 465
SSL: SSL/TLS
Authentication: Normal password

Optional

Port: 587
SSL: STARTTLS or NONE (STARTTLS for standalone and None for Cluster)
Authentication: Normal password