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http://www.exim.org/bugzilla/show_bug.cgi?id=485 Summary: Exim mistakenly prohibits underscore (_) in /HELO/EHLO commands Product: Exim Version: 4.63 Platform: All OS/Version: Linux Status: NEW Severity: bug Priority: medium Component: Mail Receipt AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] QAContact: [email protected] CC: [EMAIL PROTECTED] 2007-03-11 21:11:21 rejected HELO from gfhowalogon.glensfallshosp.org [64.80.241.66]: syntactically invalid argument(s): gfh_exchange.glensfallshosp.org Following RFC 1425, EHLO is: ehlo-cmd ::= "EHLO" SP domain CR LF 'domain' is defined in RFC822: domain = sub-domain *("." sub-domain) sub-domain = domain-ref / domain-literal domain-ref = atom atom = 1*<any CHAR except specials, SPACE and CTLs> specials = "(" / ")" / "<" / ">" / "@" ; Must be in quoted- / "," / ";" / ":" / "\" / <"> ; string, to use / "." / "[" / "]" ; within a word. CHAR = <any ASCII character> ; ( 0-177, 0.-127.) Since underscore is not in specials, nor is it a SPACE or CTL, it is not prohibited. Hence, by definition, it is not "syntactically invalid". Or is there something I'm missing? -- Configure bugmail: http://www.exim.org/bugzilla/userprefs.cgi?tab=email -- ## List details at http://www.exim.org/mailman/listinfo/exim-dev Exim details at http://www.exim.org/ ##
