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| server:mail [2019/03/24 01:37] – Document all the sbbs.ini [mail] section keys/defaults/options (whew!) digital man | server:mail [2021/07/31 19:49] – [Special Addresses] Correct the tag-block filename (its usernum.smtpblock not .smtptags) digital man |
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| The Synchronet Mail Server recognizes the incoming special address format: ''//<name>//#//<tag>//@//<host>//'' | The Synchronet Mail Server recognizes the incoming special address format: ''//<name>//#//<tag>//@//<host>//'' |
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| The //<tag>// is extracted from the address and if it is **not** found in the ''data/user/<usernum>.smtptags'' file, the mail message is | The //<tag>// is extracted from the address and if it is **not** found in the ''data/user/<usernum>.smtpblock'' file, the mail message is |
| sent to the destination user. If the tag matches a line in the ''.smtptags'' file, the email is rejected by the mail server with a "no such user" error. | sent to the destination user. If the tag matches a line in the ''.smtpblock'' file, the email is rejected by the mail server with a "no such user" error. |
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| This feature allows you (the sysop) to easily create and use "temporary" email addresses without requiring additional user accounts. Once you start receiving spam with a tag, just disable that tag by adding it to your ''.smtptags'' file. | This feature allows you (the sysop) to easily create and use "temporary" email addresses without requiring additional user accounts. Once you start receiving spam with a tag, just disable that tag by adding it to your ''.smtpblock'' file. |
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| ==== Anti-SPAM ==== | ==== Anti-SPAM ==== |
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| ^ Key ^ Default Value ^ Description ^ | ^ Key ^ Default Value ^ Description ^ |
| | Interface | [global] Interface | Comma-separated list of IPv4 and IPv6 network interfaces to listen on for incoming SMTP/SMTPS connections | | | AutoStart | true | Automatically start up the server (manual is only supported in [[monitor:sbbsctrl]]) | |
| | POP3Interface | [global] Interface | Comma-separated list of IPv4 and IPv6 network interfaces to listen on for incoming POP3/POP3S connections | | | Interface | [global] | Comma-separated list of IPv4 and IPv6 network interfaces to listen on for incoming SMTP/SMTPS connections | |
| | OutboundInterface | 0.0.0.0 | IPv4 network interface to use for outgoing SMTP/SMTPS connections (0.0.0.0 = //any interface//) | | | POP3Interface | Interface | Comma-separated list of IPv4 and IPv6 network interfaces to listen on for incoming POP3/POP3S connections | |
| | | OutboundInterface | [global] | IPv4 network interface to use for outgoing SMTP/SMTPS connections (0.0.0.0 = //any interface//) | |
| | SMTPPort | 25 | TCP port number to listen on for incoming SMTP mail-delivery connections | | | SMTPPort | 25 | TCP port number to listen on for incoming SMTP mail-delivery connections | |
| | SubmissionPort | 587 | TCP port number to listen on for incoming SMTP mail-submission connections | | | SubmissionPort | 587 | TCP port number to listen on for incoming SMTP mail-submission connections | |
| | TLSPOP3Port | 995 | TCP port number to listen on for incoming POP3S (encrypted) mail-retrieval connections | | | TLSPOP3Port | 995 | TCP port number to listen on for incoming POP3S (encrypted) mail-retrieval connections | |
| | MaxClients | 10 | Maximum number of simultaneous incoming TCP sessions supported | | | MaxClients | 10 | Maximum number of simultaneous incoming TCP sessions supported | |
| | | MaxConcurrentConnections | 0 | Maximum number of concurrent connections (without login) from the same IP address (0 = unlimited) | |
| | MaxInactivity | 120 | Maximum amount of TCP session inactivity before timeout and disconnection (in seconds) | | | MaxInactivity | 120 | Maximum amount of TCP session inactivity before timeout and disconnection (in seconds) | |
| | MaxDeliveryAttempts | 50 | Maximum number of outbound mail delivery attempts before mail is bounced back to sender | | | MaxDeliveryAttempts | 50 | Maximum number of outbound mail delivery attempts before mail is bounced back to sender | |
| | MaxMsgsWaiting | 100 | Maximum number of messages allowed in a (non-W-exempt) user's inbox | | | MaxMsgsWaiting | 100 | Maximum number of messages allowed in a (non-W-exempt) user's inbox | |
| | ConnectTimeout | 30 | Timeout (in seconds) before blocked outbound SMTP/TCP connections are aborted | | | ConnectTimeout | 30 | Timeout (in seconds) before blocked outbound SMTP/TCP connections are aborted | |
| | HostName | [global] HostName | Hostname of this server | | | HostName | [global] | Hostname of this server | |
| | TempDirectory | [global] TempDirectory | Directory to use for the storage of temporary files | | | TempDirectory | [global] | Directory to use for the storage of temporary files | |
| | RelayServer | | Hostname or IP address of SMTP server to relay outbound mail through (requires ''RELAY_TX'' option) | | | RelayServer | | Hostname or IP address of SMTP server to relay outbound mail through (requires ''RELAY_TX'' option) | |
| | RelayPort | 25 | TCP port number to connect with when relaying mail to RelayServer | | | RelayPort | 25 | TCP port number to connect with when relaying mail to RelayServer | |
| | OutboundSound | | WAV file to play upon outgoing SMTP/SMTPS connections (Windows only) | | | OutboundSound | | WAV file to play upon outgoing SMTP/SMTPS connections (Windows only) | |
| | NewMailNotice | "New e-mail from <%s>\r\n" | Format of telegram to send users upon receipt of incoming mail message | | | NewMailNotice | "New e-mail from <%s>\r\n" | Format of telegram to send users upon receipt of incoming mail message | |
| | ForwardNotice | "and it was forwarded to: %s | Additional telegram text to send to recipient of automatically forwarded mail | | | ForwardNotice | "and it was forwarded to: %s" | Additional telegram text to send to recipient of automatically forwarded mail | |
| | JavaScript* | [global] JavaScript* | JavaScript-related settings for external mail processing | | | JavaScript* | [global] | JavaScript-related settings for external mail processing | |
| | LogLevel | [global] LogLevel* | Minimum severity of log messages to be displayed / stored | | | LogLevel | [global] | Minimum severity of log messages to be displayed / stored | |
| | BindRetryCount | [global] BindRetryCount | Maximum number of TCP port bind attempts before failure | | | BindRetryCount | [global] | Maximum number of TCP port bind attempts before failure | |
| | BindRetryDelay | [global] BindRetryDelay | Delay (in seconds) between TCP port bind retries | | | BindRetryDelay | [global] | Delay (in seconds) between TCP port bind retries | |
| | LoginAttempt* | [global] LoginAttempt* | Failed login attempt throttling / filtering / banning | | | LoginAttempt* | [global] | Failed login attempt throttling / filtering / banning | |
| | Options | ''ALLOW_POP3'' | Mail server option flags (see below for details) | | | Options | ''ALLOW_POP3'' | Mail server option flags (see below for details) | |
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| | KILL_READ_SPAM | Mark received SPAM messages for "Kill after read" | | | KILL_READ_SPAM | Mark received SPAM messages for "Kill after read" | |
| | MUTE | Disable all sound (WAV) files from playing | | | MUTE | Disable all sound (WAV) files from playing | |
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