1 `banner`: `<string>` ('default =' `ESMTP Proxmox`)::
5 `conn_count_limit`: `<integer> (0 - N)` ('default =' `50`)::
7 How many simultaneous connections any client is allowed to make to this service. To disable this feature, specify a limit of 0.
9 `conn_rate_limit`: `<integer> (0 - N)` ('default =' `0`)::
11 The maximal number of connection attempts any client is allowed to make to this service per minute. To disable this feature, specify a limit of 0.
13 `dnsbl_sites`: `<string>` ::
15 Optional list of DNS white/blacklist domains (see postscreen_dnsbl_sites parameter).
17 `dnsbl_threshold`: `<integer> (0 - N)` ('default =' `1`)::
19 The inclusive lower bound for blocking a remote SMTP client, based on its combined DNSBL score (see postscreen_dnsbl_threshold parameter).
21 `dwarning`: `<integer> (0 - N)` ('default =' `4`)::
23 SMTP delay warning time (in hours).
25 `greylist`: `<boolean>` ('default =' `1`)::
29 `helotests`: `<boolean>` ('default =' `0`)::
33 `hide_received`: `<boolean>` ('default =' `0`)::
35 Hide received header in outgoing mails.
37 `maxsize`: `<integer> (1024 - N)` ('default =' `10485760`)::
39 Maximum email size. Larger mails are rejected.
41 `message_rate_limit`: `<integer> (0 - N)` ('default =' `0`)::
43 The maximal number of message delivery requests that any client is allowed to make to this service per minute.To disable this feature, specify a limit of 0.
45 `rejectunknown`: `<boolean>` ('default =' `0`)::
47 Reject unknown clients.
49 `rejectunknownsender`: `<boolean>` ('default =' `0`)::
51 Reject unknown senders.
53 `spf`: `<boolean>` ('default =' `1`)::
55 Use Sender Policy Framework.
57 `verifyreceivers`: `<450 | 550>` ::
59 Enable receiver verification. The value spefifies the numerical reply code when the Postfix SMTP server rejects a recipient address.