Mail domain report: univ-paris13.fr

SPF

pass

SPF record published

Found

Record: v=spf1 a:mailgw1.univ-spn.fr a:mailgw2.univ-spn.fr ip4:81.194.43.48/29 a:listes.univ-paris13.fr a:sercalwims.ig-edu.univ-paris13.fr ip4:194.254.167.39 ip4:192.33.182.0/24 ip4:81.194.43.175 include:spf.jobaffinity.fr include:spf-eu.exlibrisgroup.com include:spf.mailjet.com -all
DNS lookups: 7 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

No ptr mechanism found in SPF record.
✓ 7 of 10 DNS lookups #2

SPF record needs 7 DNS lookups (limit is 10).
✓ Ends with -all #3

SPF record properly uses -all to restrict unauthorized senders.
✓ Record published #6

SPF record exists for this domain.
✓ Single record #16

Exactly one SPF record is published.
✓ Valid syntax #25

All SPF mechanisms and modifiers are valid.
✓ No void lookups #26

All include/redirect targets exist.
✓ No overly broad IP ranges #27

All ip4/ip6 ranges are narrow enough.

DMARC

fail

p=none (_dmarc.univ-paris13.fr)

Found

Record: v=DMARC1; p=none; pct=100; sp=none; adkim=r; aspf=r; rua=mailto:postmaster@univ-paris13.fr; ruf=mailto:postmaster@univ-paris13.fr; fo=1;
Found at: _dmarc.univ-paris13.fr

Tag	Value	Meaning
v	DMARC1	Version
p	none	Policy
sp	none	Subdomain policy
pct	100	Percentage of mail the policy applies to
rua	mailto:postmaster@univ-paris13.fr	Aggregate report addresses
ruf	mailto:postmaster@univ-paris13.fr	Failure report addresses
adkim	r	DKIM alignment (r = relaxed, s = strict)
aspf	r	SPF alignment (r = relaxed, s = strict)
fo	1	Failure reporting options

Checks

✗

Policy: none (monitoring only)

DMARC policy is set to 'none', which only monitors but doesn't protect against spoofing. Consider upgrading to 'quarantine' or ideally 'reject'.

#4
✓ Record published #5

DMARC record exists for this domain.
✓ Valid syntax #17

DMARC record syntax is valid.
✓ Aggregate reports enabled #19

Aggregate reports are sent to: mailto:postmaster@univ-paris13.fr
✓ Report addresses in own domain #29

All report addresses are in your own organizational domain.

DKIM

warn

Selectors: dkim, mail

Found

Selectors: dkim, mail
_domainkey: NOERROR

Selector	Key	Flags
dkim	RSA 2048 bits
mail	RSA 1024 bits

Checks

✓ Keys found: dkim, mail #7

DKIM keys found for this domain with selectors: dkim, mail
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: mail (1024 bits). Rotate to a 2048-bit key.

#23
✓ No problematic flags #24

No keys in test mode, revoked, or limited to SHA-1.

DNSSEC

warn

Not signed

Found

DNSKEY records: No (0)
DS at parent: No

Checks

!

Not enabled

DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.

#8

MX

warn

2 mail servers

Found

Priority	Host	Records	Reverse DNS
50	mailgw1.univ-spn.fr	A 81.194.43.173	mailgw1.univ-spn.fr ✓
50	mailgw2.univ-spn.fr	A 81.194.43.174	mailgw2.univ-spn.fr ✓

Checks

✓ 2 MX records #9

Found 2 MX records for this domain.
✓ All hosts resolve #10

All MX records resolve to valid IP addresses.
!

Hosts without IPv6

The following MX hosts could not be resolved to IPv6 addresses: mailgw1.univ-spn.fr, mailgw2.univ-spn.fr

#11
✓ Redundant MX hosts #12

Found 2 MX records, which provides redundancy for email delivery.
✓ At most 5 MX records #13

Found 2 MX records, which is within the recommended range (1-5).
✓ No localhost targets #14

No MX records pointing to localhost found.
✓ No private IP addresses #15

No MX records resolving to private IP addresses found.
✓ No CNAME targets #22

No MX records point to a CNAME.
✓ Reverse DNS confirmed #30

All 2 MX addresss have a PTR record that resolves back to them.

TLS

warn

MTA-STS testing · TLS-RPT · DANE on 0 of 2 MX hosts

Found

MTA-STS record: v=STSv1; id=20220922193555
Policy URL: https://mta-sts.univ-paris13.fr/.well-known/mta-sts.txt
Mode: testing
Allowed MX: mx1.univ-paris13.fr, mx2.univ-paris13.fr
Max age: 86401 seconds
TLS-RPT record: v=TLSRPTv1; rua=mailto:dsi-infrastructure@univ-paris13.fr

DANE (TLSA records)

MX host	TLSA	DNSSEC
mailgw1.univ-spn.fr	none	-
mailgw2.univ-spn.fr	none	-

Checks

✓ Record published #32

MTA-STS record found with id 20220922193555.
!

Policy in testing mode

With mode: testing, senders only report TLS problems (via TLS-RPT) and still deliver without TLS. Switch to mode: enforce once reports are clean.

#33
!

MX hosts missing from policy

These MX hosts are not listed in the MTA-STS policy (mx: mx1.univ-paris13.fr, mx2.univ-paris13.fr): mailgw1.univ-spn.fr, mailgw2.univ-spn.fr. This will break delivery once the policy is enforced.

#34
✓ Reports enabled #35

TLS reports are sent to: mailto:dsi-infrastructure@univ-paris13.fr
i

Not used

No MX host publishes TLSA records. DANE lets senders verify your mail server's certificate through DNSSEC; it requires DNSSEC on the MX host's zone.

#36

BIMI

info

No BIMI record

Checks

i

Not configured

BIMI shows your logo next to your mail in supporting mail clients. It requires DMARC enforcement.

#38