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https://github.com/mailscope/kumomta.git
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Wez Furlong
74635be9fb
The classifier can load and merge rules from multiple files. A basic iana enhanced status codes ruleset is provided. A deployment can define their own to augment that set. This commit is just the core classifier functionality; it is not yet connected to kumod. The classification enum is a bit of an amalgam of categories defined by other well-known vendors/products and the categories defined by IANA. Some classifications have no corresponding rules at the current time.
61 lines
1.8 KiB
TOML
61 lines
1.8 KiB
TOML
# This file contains rules that match SMTP ENHANCEDSTATUSCODES
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# codes as defined in the IANA registry:
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# https://www.iana.org/assignments/smtp-enhanced-status-codes/smtp-enhanced-status-codes.xhtml
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# to bounce classifications.
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[rules]
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InvalidRecipient = [
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"^(451|550) [45]\\.1\\.[1234] ",
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"^45[02] [45]\\.2\\.4 ", # Mailing list expansion
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"^5\\d{2} [45]\\.7\\.17 ", # RRVS: Mailbox owner has changed
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]
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BadDomain = [
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"^(451|550) [45]\\.1\\.10 ", # NULL MX
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"^5\\d{2} [45]\\.7\\.18 ", # RRVS: domain owner has changed
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]
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InactiveMailbox = [
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"^(451|550) [45]\\.1\\.[6] ",
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"^[45]\\d{2} [45]\\.2\\.1 ",
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"^525 [45]\\.7\\.13 ", # User account disabled
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]
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InvalidSender = [
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"^(451|550) [45]\\.1\\.[78] ",
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"^\\d{3} [45]\\.7\\.27 ", # Send address has NULL MX
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]
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QuotaIssues = [
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"^552 [45]\\.2\\.2 ",
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"^552 [45]\\.2\\.3 ",
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"^452 [45]\\.3\\.1 ", # Mail System Full
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"^55[24] [45]\\.3\\.4 ", # Message too large for system
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]
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NoAnswerFromHost = [
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"^451 [45]\\.4\\.1 ",
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]
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BadConnection = [
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"^421 [45]\\.4\\.2 ",
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]
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DNSFailure = [
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"^(451|550) [45]\\.4\\.3 ", # directory server failure
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]
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RoutingErrors = [
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"^\\d{3} [45]\\.4\\.4 ", # unable to route
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"^\\d{3} [45]\\.4\\.6 ", # routing loop detected
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]
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TransientFailure = [
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"^451 [45]\\.4\\.5 ", # Congestion
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]
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MessageExpired = [
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"^\\d{3} [45]\\.4\\.7 ", # delivery time expired
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]
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ProtocolErrors = [
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"^\\d{3} [45]\\.5\\.\\d+ ", # misc protocol error
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"^\\d{3} [45]\\.6\\.\\d+ ", # content negotiation protocol error
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]
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AuthenticationFailed = [
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# Note that a couple of x.7.x codes map to BadDomain and InvalidRecipient
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# so take care to avoid an ambiguous match here
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"^5\\d{2} [45]\\.7\\.(0|1|2|3|4|5|6|7|8|9|10|11|12|14|15|19|20|21|22|23|24|25|26|29|30) ",
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]
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PolicyRelated = [
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"^\\d{3} [45]\\.7\\.38 ", # mail flood detected
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]
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