Courier Site Administration
SMTP Server
Incoming SMTP Connections
Enable SMTP server
Listen on:
ALL IP ADDRESSES
(Uncheck "ALL IP ADDRESSES" to check individual interfaces.)
Listen only on the following ip addresses:
127.0.0.1
192.168.1.5
203.211.130.180
Advertise SMTP Authentication on this connection.
Only "LOGIN" and "PLAIN" are available as authentication methods because we store passwords in encrypted hashes. Therefore it is
not
recommended that you enable this since usernames and passwords will sent in the clear.
Incoming SMTP-SSL Connections
Enable SMTP-SSL server
Listen on:
ALL IP ADDRESSES
(Uncheck "ALL IP ADDRESSES" to check individual interfaces.)
Listen only on the following ip addresses:
127.0.0.1
192.168.1.5
203.211.130.180
Advertise SMTP Authentication on this connection.
Only "LOGIN" and "PLAIN" are available as authentication methods because we store passwords as encrypted hashes. But since the connection is encrypted, no information is transmitted in the clear.
Incoming Connection Limits and Logging
Total number of simultaneous connections accepted at any time.
Maximum number of simultaneous connections from one IP address.
Maximum number of simultaneous connections from one class C subnet.
Logging:
normal
verbose
Outgoing Connection Limits
Maximum number of simultaneous external deliveries at one time.
Maximum number of simultaneous deliveries to a single host.
Additional messages will be queued and delivered when there are new connections available.
Maximum addresses per message.
Messages with more recipients than this will be split into separate messages with this many recipients.
Incoming Message Control and Options
Scan incoming messages for viruses.
You must have "pyclamav" and "libclamav" installed for virus scanning to work.
Require the sender's email domain to exist.
Use the
blacklists from SpamHaus
to refuse connections from known "abusive" ISPs.
Use Sender Policy Framework (SPF) to verify senders.
Add a "Date:" header to any message which doesn't have one.
Add a "Message-ID:" header to any message which doesn't have one.
Do an IDENT lookup on incoming connections.
IP Address Access Control
Allow these ip addresses
to send mail without authenticating:
127.0.0.1
Allow Address:
Do not allow these ip addresses
to connect to our server:
Deny Address:
Enter a single ip address ("10.10.10.12"), a subnet ("10.10.10" or "10.10.10.0/24"), or a range ("10.10.10.12-10.10.10.25")
Message Limits
Largest message we will accept:
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2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Megabytes.
Most recipients we will accept in one message:
100
150
200
250
300
350
400
450
500
addresses.
Delivery Failures
Alert sender if we can't deliver their message after trying for:
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2
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5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
hours
days
weeks
Return message as undeliverable if we can't deliver it after trying for:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
hours
days
weeks
Logout
Settings
General
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