A Python package and CLI for parsing aggregate and forensic DMARC reports
Project description
parsedmarc is a Python module and CLI utility for parsing DMARC reports. When used with Elasticsearch and Kibana (or Splunk), it works as a self-hosted open source alternative to commercial DMARC report processing services such as Agari, Dmarcian, and OnDMARC.
Features
Parses draft and 1.0 standard aggregate/rua reports
Parses forensic/failure/ruf reports
Can parse reports from an inbox over IMAP
Transparently handles gzip or zip compressed reports
Consistent data structures
Simple JSON and/or CSV output
Optionally email the results
Optionally send the results to Elasticsearch and/or Splunk, for use with premade dashboards
Resources
CLI help
usage: parsedmarc [-h] [-o OUTPUT] [-n NAMESERVERS [NAMESERVERS ...]]
[-t TIMEOUT] [-H HOST] [-u USER] [-p PASSWORD]
[--imap-port IMAP_PORT] [--imap-no-ssl] [-r REPORTS_FOLDER]
[-a ARCHIVE_FOLDER] [-d]
[-E [ELASTICSEARCH_HOST [ELASTICSEARCH_HOST ...]]]
[--elasticsearch-index-prefix ELASTICSEARCH_INDEX_PREFIX]
[--elasticsearch-index-suffix ELASTICSEARCH_INDEX_SUFFIX]
[--hec HEC] [--hec-token HEC_TOKEN] [--hec-index HEC_INDEX]
[--hec-skip-certificate-verification] [--save-aggregate]
[--save-forensic] [-O OUTGOING_HOST] [-U OUTGOING_USER]
[-P OUTGOING_PASSWORD] [--outgoing-port OUTGOING_PORT]
[--outgoing-ssl OUTGOING_SSL] [-F OUTGOING_FROM]
[-T OUTGOING_TO [OUTGOING_TO ...]] [-S OUTGOING_SUBJECT]
[-A OUTGOING_ATTACHMENT] [-M OUTGOING_MESSAGE] [-w] [--test]
[-s] [--debug] [-v]
[file_path [file_path ...]]
Parses DMARC reports
positional arguments:
file_path one or more paths to aggregate or forensic report
files or emails
optional arguments:
-h, --help show this help message and exit
-o OUTPUT, --output OUTPUT
Write output files to the given directory
-n NAMESERVERS [NAMESERVERS ...], --nameservers NAMESERVERS [NAMESERVERS ...]
nameservers to query (Default is Cloudflare's)
-t TIMEOUT, --timeout TIMEOUT
number of seconds to wait for an answer from DNS
(default 2.0)
-H HOST, --host HOST IMAP hostname or IP address
-u USER, --user USER IMAP user
-p PASSWORD, --password PASSWORD
IMAP password
--imap-port IMAP_PORT
IMAP port
--imap-no-ssl Do not use SSL/TLS when connecting to IMAP
-r REPORTS_FOLDER, --reports-folder REPORTS_FOLDER
The IMAP folder containing the reports Default: INBOX
-a ARCHIVE_FOLDER, --archive-folder ARCHIVE_FOLDER
Specifies the IMAP folder to move messages to after
processing them Default: Archive
-d, --delete Delete the reports after processing them
-E [ELASTICSEARCH_HOST [ELASTICSEARCH_HOST ...]], --elasticsearch-host [ELASTICSEARCH_HOST [ELASTICSEARCH_HOST ...]]
A list of one or more Elasticsearch hostnames or URLs
to use (e.g. localhost:9200)
--elasticsearch-index-prefix ELASTICSEARCH_INDEX_PREFIX
Prefix to add in front of the dmarc_aggregate and
dmarc_forensic Elasticsearch index names, joined by _
--elasticsearch-index-suffix ELASTICSEARCH_INDEX_SUFFIX
Append this suffix to the dmarc_aggregate and
dmarc_forensic Elasticsearch index names, joined by _
--hec HEC URL to a Splunk HTTP Event Collector (HEC)
--hec-token HEC_TOKEN
The authorization token for a Splunk HTTP Event
Collector (HEC)
--hec-index HEC_INDEX
The index to use when sending events to the Splunk
HTTP Event Collector (HEC)
--hec-skip-certificate-verification
Skip certificate verification for Splunk HEC
--save-aggregate Save aggregate reports to search indexes
--save-forensic Save forensic reports to search indexes
-O OUTGOING_HOST, --outgoing-host OUTGOING_HOST
Email the results using this host
-U OUTGOING_USER, --outgoing-user OUTGOING_USER
Email the results using this user
-P OUTGOING_PASSWORD, --outgoing-password OUTGOING_PASSWORD
Email the results using this password
--outgoing-port OUTGOING_PORT
Email the results using this port
--outgoing-ssl OUTGOING_SSL
Use SSL/TLS instead of STARTTLS (more secure, and
required by some providers, like Gmail)
-F OUTGOING_FROM, --outgoing-from OUTGOING_FROM
Email the results using this from address
-T OUTGOING_TO [OUTGOING_TO ...], --outgoing-to OUTGOING_TO [OUTGOING_TO ...]
Email the results to these addresses
-S OUTGOING_SUBJECT, --outgoing-subject OUTGOING_SUBJECT
Email the results using this subject
-A OUTGOING_ATTACHMENT, --outgoing-attachment OUTGOING_ATTACHMENT
Email the results using this filename
-M OUTGOING_MESSAGE, --outgoing-message OUTGOING_MESSAGE
Email the results using this message
-w, --watch Use an IMAP IDLE connection to process reports as they
arrive in the inbox
--test Do not move or delete IMAP messages
-s, --silent Only print errors and warnings
--debug Print debugging information
-v, --version show program's version number and exit
SPF and DMARC record validation
If you are looking for SPF and DMARC record validation and parsing, check out the sister project, checkdmarc.
Sample aggregate report output
Here are the results from parsing the example report from the dmarc.org wiki. It’s actually an older draft of the the 1.0 report schema standardized in RFC 7480 Appendix C. This draft schema is still in wide use.
parsedmarc produces consistent, normalized output, regardless of the report schema.
JSON
{
"xml_schema": "draft",
"report_metadata": {
"org_name": "acme.com",
"org_email": "noreply-dmarc-support@acme.com",
"org_extra_contact_info": "http://acme.com/dmarc/support",
"report_id": "9391651994964116463",
"begin_date": "2012-04-27 20:00:00",
"end_date": "2012-04-28 19:59:59",
"errors": []
},
"policy_published": {
"domain": "example.com",
"adkim": "r",
"aspf": "r",
"p": "none",
"sp": "none",
"pct": "100",
"fo": "0"
},
"records": [
{
"source": {
"ip_address": "72.150.241.94",
"country": "US",
"reverse_dns": "adsl-72-150-241-94.shv.bellsouth.net",
"base_domain": "bellsouth.net"
},
"count": 2,
"alignment": {
"spf": true,
"dkim": false,
"dmarc": true
},
"policy_evaluated": {
"disposition": "none",
"dkim": "fail",
"spf": "pass",
"policy_override_reasons": []
},
"identifiers": {
"header_from": "example.com",
"envelope_from": "example.com",
"envelope_to": null
},
"auth_results": {
"dkim": [
{
"domain": "example.com",
"selector": "none",
"result": "fail"
}
],
"spf": [
{
"domain": "example.com",
"scope": "mfrom",
"result": "pass"
}
]
}
}
]
}CSV
xml_schema,org_name,org_email,org_extra_contact_info,report_id,begin_date,end_date,errors,domain,adkim,aspf,p,sp,pct,fo,source_ip_address,source_country,source_reverse_dns,source_base_domain,count,disposition,dkim_alignment,spf_alignment,policy_override_reasons,policy_override_comments,envelope_from,header_from,envelope_to,dkim_domains,dkim_selectors,dkim_results,spf_domains,spf_scopes,spf_results draft,acme.com,noreply-dmarc-support@acme.com,http://acme.com/dmarc/support,9391651994964116463,2012-04-27 20:00:00,2012-04-28 19:59:59,,example.com,r,r,none,none,100,0,72.150.241.94,US,adsl-72-150-241-94.shv.bellsouth.net,bellsouth.net,2,none,fail,pass,,,example.com,example.com,,example.com,none,fail,example.com,mfrom,pass
Sample forensic report output
I don’t have a sample I can share for privacy reasons. If you have a sample forensic report that you can share publicly, please contact me!
Installation
parsedmarc works with Python 2 or 3, but Python 3 is preferred.
On Debian or Ubuntu systems, run:
$ sudo apt-get install python3-pipPython 3 installers for Windows and macOS can be found at https://www.python.org/downloads/
To install or upgrade to the latest stable release of parsedmarc on macOS or Linux, run
$ sudo -H pip3 install -U parsedmarcOr, install the latest development release directly from GitHub:
$ sudo -H pip3 install -U git+https://github.com/domainaware/parsedmarc.gitInstallation using pypy3
For the best possible processing speed, consider using parsedmarc inside a pypy3 virtualenv. First, download the latest version of pypy3. Extract it to /opt/pypy3 (sudo mkdir /opt if /opt does not exist), then create a symlink:
$ sudo ln -s /opt/pypy3/bin/pypy3 /usr/local/bin/pypy3Install virtualenv on your system:
$ sudo apt-get install python3-pip
$ sudo -H pip3 install -U virtualenvUninstall any instance of parsedmarc that you may have installed globally
$ sudo -H pip3 uninstall -y parsedmarcNext, create a pypy3 virtualenv for parsedmarc
$ sudo mkdir /opt/venvs
$ cd /opt/venvs
$ sudo -H pip3 install -U virtualenv
$ sudo virtualenv --download -p /usr/local/bin/pypy3 parsedmarc
$ sudo -H /opt/venvs/parsedmarc/bin/pip3 install -U parsedmarc
$ sudo ln -s /opt/venvs/parsedmarc/bin/parsedmarc /usr/local/bin/parsedmarcTo upgrade parsedmarc inside the virtualenv, run:
$ sudo -H /opt/venvs/parsedmarc/bin/pip3 install -U parsedmarcOr, install the latest development release directly from GitHub:
$ sudo -H /opt/venvs/parsedmarc/bin/pip3 install -U git+https://github.com/domainaware/parsedmarc.gitOptional dependencies
If you would like to be able to parse emails saved from Microsoft Outlook (i.e. OLE .msg files), install msgconvert:
On Debian or Ubuntu systems, run:
$ sudo apt-get install libemail-outlook-message-perlDNS performance
You can often improve performance by providing one or more local nameservers to the CLI or function calls, as long as those nameservers return the same records as the public DNS.
Testing multiple report analyzers
If you would like to test parsedmarc and another report processing solution at the same time, you can have up to two mailto URIs each in the rua and ruf tags tgs in your DMARC record, separated by commas.
Documentation
Bug reports
Please report bugs on the GitHub issue tracker
Release history Release notifications | RSS feed
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