mbirth/mail-arc
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Added upstream ARC verification.

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This commit is contained in:
Markus Birth 2017-07-03 00:29:54 +02:00
parent f5ac6a1c81
commit 2bb03f134d
1 changed files with 14 additions and 8 deletions
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22
qmail-arc.py
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@ -42,6 +42,8 @@ up_srv_ip = up_srv_ip_match.group(2)
sender_address = os.getenv('SENDER')
results_list = []
### REV IP LOOKUP
iprev_res = "fail"
@ -58,7 +60,7 @@ except:
iprev_res = "temperror"
iprev_result = authres.IPRevAuthenticationResult(result=iprev_res, policy_iprev=up_srv_ip, policy_iprev_comment=iprev_hn)
results_list += [iprev_result]
### SPF CHECK
@ -67,22 +69,26 @@ iprev_result = authres.IPRevAuthenticationResult(result=iprev_res, policy_iprev=
# by serpens.uberspace.de with SMTP; 23 Jun 2017 18:43:18 -0000
spf_result = spf.check2(i=up_srv_ip, s=sender_address, h=up_srv_helo)
spf_res = authres.SPFAuthenticationResult(result=spf_result[0], smtp_mailfrom=sender_address, smtp_helo=up_srv_helo, reason=spf_result[1])
results_list += [spf_res]
# Write Received-SPF header
sys.stdout.write('Received-SPF: {} ({}) client-ip={} helo={} envelope-from={}'.format(spf_result[0], spf_result[1], up_srv_ip, up_srv_helo, sender_address)+"\n")
### PREP AUTH RESULT
spf_res = authres.SPFAuthenticationResult(result=spf_result[0], smtp_mailfrom=sender_address, smtp_helo=up_srv_helo, reason=spf_result[1])
auth_res = authres.AuthenticationResultsHeader(authserv_id=AUTHSERV_ID, results=[spf_res, iprev_result])
sys.stdout.write(str(auth_res)+"\n")
### ARC SIGNATURE
cv = dkim.CV_None
if re.search('arc-seal', message, re.IGNORECASE):
cv = dkim.CV_Pass
arc_vrfy = dkim.arc_verify(message)
cv = arc_vrfy[0]
results_list += arc_vrfy[1]
### PREP AUTH RESULT
auth_res = authres.AuthenticationResultsHeader(authserv_id=AUTHSERV_ID, results=results_list)
sys.stdout.write(str(auth_res)+"\n")
# parameters: message, selector, domain, privkey, auth_results, chain_validation_status
sig = dkim.arc_sign(message, DKIM_SELECTOR, DKIM_DOMAIN, privkey, str(auth_res)[24:], cv)