|
TABLE 2: IMPORTANT SETTINGS FOR SMTP VIRTUAL SERVER |
|
SMTP Server Property | Default value | Other possible values |
| Outbound
security | Allow anonymous connections. Exchange 2000 servers
ignore this setting as they establish their own
credentials before sending messages. | Require basic
authentication (clear text)
or TLS (encrypted) with a X.509
server certificate. |
| Inbound security | Allow anonymous connections
(must be set to allow IMAP and POP clients to send messages)
| Require basic
authentication or TLS |
| Port
number | 25 | Any free IP port |
| Limit
message size | 2048 KB (2MB) | |
| Limit
number of messages per connection | Unlimited | |
| Limit
number of recipients per message | Unlimited | |
| Outbound
retry intervals | 1st 15 minutes, 2nd
30 minutes, 3rd 60 minutes, then
240 minutes until timeout | |
| Delay
notifications | Send after 12 hours | |
| Expiration
timeout | 2 days | |
| Local
delivery delay | 12 hours | |
| Maximum
hop count | 15 | |
| Smart
host name | FQDN or IP address of smart
host server | |
| Connection
controls | All servers can connect | Define a list of servers that are allowed
to connect to this server |
| Relay
restrictions | All servers that can
connect can relay (submit
messages for onward delivery) | Define a list of
servers that are allowed
to relay messages. |