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%%{
machine smtp_address;
# SMTP address spec
# Source: https://tools.ietf.org/html/rfc5321#section-4.1.2
# Dependencies: smtp_base + smtp_ip
# Required actions:
# - User_has_backslash
# - User_end
# - Quoted_addr
# - Domain_start
# - Domain_end
# - Addr_end
# - Addr_has_angle
# - Valid_addr
# - Empty_addr
# + from deps:
# - IP4_start
# - IP4_end
# - IP6_start
# - IP6_end
# - Domain_addr_start
# - Domain_addr_end
# SMTP address spec
# Obtained from: https://tools.ietf.org/html/rfc5321#section-4.1.2
# Additions from rfc6532 (smtputf8): https://tools.ietf.org/html/rfc6532#section-3.2
QcontentSMTP = qtextSMTP | quoted_pairSMTP %User_has_backslash;
Quoted_string = ( DQUOTE QcontentSMTP* >User_start %User_end DQUOTE ) %Quoted_addr;
Local_part = Dot_string >User_start %User_end | Quoted_string;
Mailbox = Local_part "@" (address_literal | Domain >Domain_start %Domain_end);
UnangledPath = ( Adl ":" )? Mailbox >Addr_start %Addr_end "."?;
AngledPath = "<" space* UnangledPath space* ">" %Addr_has_angle;
Path = AngledPath | UnangledPath;
SMTPAddr = space* (Path | "<>" %Empty_addr ) %Valid_addr space*;
}%%
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