Postfix implemetation TempError DNS resolving

[Oleksii Petrov]

Some time ago I detect that spf-python implementation stay generate Temperror at log of postfix mail server.

postfix-policyd-spf-python - "DNS time out".

PORTNAME= postfix-policyd-spf-python
PORTVERSION= 0.8.1

py27-dns-2.3.6 DNS (Domain Name Service) library for Python
py27-postfix-policyd-spf-python-0.8.1 Pure Python Postfix policy daemon for SPF checking
py27-spf-2.0.7 Python implementation of the RFC 4408 SPF protocol
py27-subversion-1.7.3 Python bindings for version control system

Feb 23 11:21:52 postfix/smtpd: connect from mail-bk0-f49.google.com[209.85.214.49]
Feb 23 11:21:52 postfix/smtpd: Anonymous TLS connection established from mail-bk0-f49.google.com[209.85.214.49]: TLSv1 with cipher ECDHE-RSA
Feb 23 11:21:53 policyd-spf: Starting

Feb 23 11:21:53 policyd-spf: Config: {'Mail_From_reject': 'Fail', 'PermError_reject': 'False', 'HELO_reject': 'SPF_Not_Pass', 'defaultSeedOn
Feb 23 11:21:53 policyd-spf: Cached data for this instance: []
Feb 23 11:22:23 policyd-spf: spfcheck: pyspf result: "['Temperror', 'SPF Temporary Error: DNS Timeout', 'helo']"
Feb 23 11:22:23 policyd-spf: Temperror; identity=helo; client-ip=209.85.214.49; helo=mail-bk0-f49.google.com; <email address hidden>

Early all worked ok.
p.s. Now I try use latest version 1.0, problem the same. Perl SPF implementation work ok and now.

[Scott Kitterman (kitterman)]

This is much more likely a pyspf or pydns issue. Find the pyspf executable on
your system (I don't know where it would be for your kind of system). It is
the file spf.py provided by py27-spf-2.0.7. Then try:

$ python spf.py "209.85.214.49" "<email address hidden>" "mail-bk0-
f49.google.com"

The response you get should be:

('none', 250, '')

If you can reproduce the temperror there, then it's not the policy server
where the issue is.

[Oleksii Petrov (lexxai-b)]

 python /usr/local/bin/spf.py "209.85.214.49" "<email address hidden>" "mail-bk0-f49.google.com"
('temperror', 451, 'SPF Temporary Error: DNS Timeout') None

Would you know what may be with python DNS, and how debug it ?
I'm php user, python is unknown area.

[Oleksii Petrov (lexxai-b)]

was installed old version pydns-2.3.5 instead pydns-2.3.6 and now all answer ok.
python spf.py "209.85.214.49" "<email address hidden>" "mail-bk0-f49.google.com"
('none', 250, '') None

thanks.

[Scott Kitterman (kitterman)]

Glad you got it worked out.