Network

Network Restrictions on received email

   Network settings

PortEnable

You can optionally enable this protocol

Example interface:

Options:On/Off

Default:true

Port

the port you wish the server to bind to. If you are using Hexamail as the gateway for your company email, you will typically want to leave this on the default setting of 25

Example interface:

Default:25

Example:25

SSLPortEnable

You can optionally enable this protocol over a secure channel using SSL. If you do not specify a certificate name using the SSLCertificate configuration parameter in the config file (.cfg) one will be created automatically for you. However, as this is an auto-created certificate it will not be signed by a certification authority and may cause warnings in the clients used to connect to this server. If the users of the clients accept the warnings, then SSL can be used immediately. If you do not wish users to see these warnings you need to obtain and install a valid, signed, SSL certificate for your server from a provider such as Thawte, or Verisign. You must then specify the certificate name in the SSLCertificate parameter of the configuration file.

Example interface:

Options:On/Off

Default:false

SSL Port

You can allow SMTP access over SSL on a separate port. 465 is the default standard for SSL enabled SMTP and will work with most email clients.

Example interface:

Range25 - 32000

Default:465

Example:465

Advanced...

Press the Advanced button to open the advanced bindings/NIC settings.

   Restrictions

Max Connections

You can allow a large number of simultaneous connections to provide for large amounts of email users. Set this high if you have lots of users all wishing to connect simultaneously.

Example interface:

Range1 - 256

Default:32

Example:32

Connect Cache

The total amount of RAM to use for caching during communications. A larger value will consume more of the machine's RAM but result in faster communications.

Example interface:

Range2 - 64 MBytes

Default:4 MBytes

Example:16 MBytes

Timeout

If no data at all is received from a remote server within this time the connection is dropped

Default:240 Seconds

Example:60 Seconds

Disallowed IP Addresses

This is the list of disallowed IP addresses that cannot connect to your SMTP server. You can use wildcards and ranges (e.g. 192.168.0.0/16, 192.*.*.*, 192.10-50.*.*) or leave blank for no restrictions. By setting this connections from any IP that matches an entry in this list are prevented. Note that if an IP matches an entry in the allowed IP address it is allowed regardless of matching a disallowed IP

Example interface:

Example:62.235.23.32

Importing data

Press the import button, also shown as >> when the interface is small, to import data into the list.The following file types are supported:

        CSV (Comma delimited) (*.csv)
        Text (Tab delimited) (*.txt)
        All Files (*.*)
        
The data should be separated by commas, tab characters or newlines.
Each data entry must match the validation wildcard '*@*.*'. Entries that do not match will be discarded.
Duplicate entries are not imported more than once.

   Temporary blocks

Temporarily block IPs for

This is how long temporarily blocked IPs are blocked for

Example interface:

Range0 - 999999 minutes

Default:240 minutes

Example:300 minutes

   Size/Bandwidth

Max Incoming Bandwidth

You can throttle the maximum bandwidth allowed for sending email clients to use when communicating with it. Typically you do not need to change this setting.

Example interface:

Range1 - 1000000 kbps

Default:1000000 kbps

Example:64 kbps

Max Outgoing Bandwidth

You can throttle the maximum bandwidth allowed for sending responses to email clients. Typically you do not need to change this setting.

Example interface:

Range1 - 1000000 kbps

Default:1000000 kbps

Example:64 kbps

Max Email Size

You can set the maximum message size that is allowed to be sent through this server. Remember that this includes the size of the attachments encoded using MIME encoding. Hexamail will disconnect any email client attempting to send larger email.

Example interface:

Range1 - 512000 kbytes

Default:32000 kbytes

Example:10000 kbytes

From Internal

You can set the maximum message size that is allowed to be sent through this server by an internal domain sender address. Remember that this includes the size of the attachments encoded using MIME encoding. Hexamail will disconnect any email client attempting to send larger email.

Example interface:

Range1 - 1000000 kbytes

Default:64000 kbytes

Example:56000 kbytes

Skip size check for

Skip mesage size checks for these sender addresses

Example interface:

Example:admin@domain.com

Check Email Lines

Example interface:

Options:On/Off

Default:false

Maximum Email Lines

You can set the maximum number of lines a email can have before the server blocks the email. This includes the lines used in transmitting attachments, HTML alternative versions etc.

Example interface:

Range1 - 256000 lines

Default:1000 lines

Example:1000 lines