C
ubuntuwic.ca
Score 78/100 · 1 failing, 6 warnings
Mail provider: Google Workspace
Check another domain Re-scan

Scanned 16 days ago. Re-scan for a fresh result after a fix.

Issues to fix

Results

01Mail exchangers (MX)A
pass
1 MX record(s) found.
records
preferenceexchangettl
1smtp.google.com1799
info
Only one MX host, a secondary MX adds delivery resilience.
02Mail providerC
info
Mail provider: Google Workspace.
provider google
warn
SPF does not include Google Workspace's sending hosts (_spf.google.com), so Google Workspace mail may fail SPF.
expected _spf.google.com
warn
Google Workspace DKIM is not published for this domain (common for unconfigured custom domains).
selectors google
03SPFC
fail
No SPF record: receivers cannot verify which hosts may send mail for this domain.
RFC 7208 (updated by RFC 8553, RFC 8616)
04DKIMA
pass
Selector k2 key is ~2048-bit.
selector k2
record v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w…IDAQAB;
bits 2048
info
DKIM2 reuses these same selector._domainkey records and advertises no capability, so support cannot be detected from DNS. The 1 published key(s) carry over as they are. Adding an Ed25519 key (RFC 8463) prepares for it.
draft-ietf-dkim-dkim2-spec
keys 1
ed25519 false
05DMARCA
pass
DMARC record present.
record v=DMARC1; p=none;
warn
p=none: monitoring only, unauthenticated mail is not blocked.
RFC 9989
p none
rua false
06DNS healthA
pass
2 nameservers published.
RFC 2182
count 2
pass
SOA timers are sane.
RFC 1912
mname pdns1.registrar-servers.com.
rname hostmaster.registrar-servers.com.
refresh 43200
retry 3600
expire 604800
minimum 3601
info
Zone is not DNSSEC-signed.
RFC 9364
07BlacklistsA
info
IPv6 MX addresses are not checked against IP DNSBLs.
pass
142.251.167.27 is not listed on SpamCop.
target 142.251.167.27
list SpamCop
pass
142.251.179.27 is not listed on SpamCop.
target 142.251.179.27
list SpamCop
pass
173.194.45.27 is not listed on SpamCop.
target 173.194.45.27
list SpamCop
pass
173.194.45.26 is not listed on SpamCop.
target 173.194.45.26
list SpamCop
pass
142.251.167.27 is not listed on GBUdb Truncate.
target 142.251.167.27
list GBUdb Truncate
pass
192.178.218.27 is not listed on SpamCop.
target 192.178.218.27
list SpamCop
pass
192.178.218.27 is not listed on GBUdb Truncate.
target 192.178.218.27
list GBUdb Truncate
pass
142.251.179.27 is not listed on GBUdb Truncate.
target 142.251.179.27
list GBUdb Truncate
pass
173.194.45.26 is not listed on GBUdb Truncate.
target 173.194.45.26
list GBUdb Truncate
pass
173.194.45.27 is not listed on GBUdb Truncate.
target 173.194.45.27
list GBUdb Truncate
pass
192.178.218.27 is not listed on PSBL.
target 192.178.218.27
list PSBL
pass
173.194.45.27 is not listed on Spamhaus ZEN.
target 173.194.45.27
list Spamhaus ZEN
pass
192.178.218.27 is not listed on Spamhaus ZEN.
target 192.178.218.27
list Spamhaus ZEN
pass
173.194.45.26 is not listed on Spamhaus ZEN.
target 173.194.45.26
list Spamhaus ZEN
pass
142.251.179.27 is not listed on Spamhaus ZEN.
target 142.251.179.27
list Spamhaus ZEN
pass
ubuntuwic.ca is not listed on Spamhaus DBL.
target ubuntuwic.ca
list Spamhaus DBL
pass
142.251.167.27 is not listed on Spamhaus ZEN.
target 142.251.167.27
list Spamhaus ZEN
pass
142.251.167.27 is not listed on PSBL.
target 142.251.167.27
list PSBL
pass
173.194.45.27 is not listed on Spamhaus AuthBL.
target 173.194.45.27
list Spamhaus AuthBL
pass
173.194.45.26 is not listed on Spamhaus AuthBL.
target 173.194.45.26
list Spamhaus AuthBL
pass
142.251.179.27 is not listed on PSBL.
target 142.251.179.27
list PSBL
pass
142.251.179.27 is not listed on Spamhaus AuthBL.
target 142.251.179.27
list Spamhaus AuthBL
pass
142.251.167.27 is not listed on Spamhaus AuthBL.
target 142.251.167.27
list Spamhaus AuthBL
pass
192.178.218.27 is not listed on Spamhaus AuthBL.
target 192.178.218.27
list Spamhaus AuthBL
pass
173.194.45.27 is not listed on PSBL.
target 173.194.45.27
list PSBL
pass
173.194.45.26 is not listed on PSBL.
target 173.194.45.26
list PSBL
pass
ubuntuwic.ca is not listed on Spamhaus ZRD.
target ubuntuwic.ca
list Spamhaus ZRD
08Bulk sending readinessA
warn
Partial bulk-sender setup, missing SPF. Gmail/Yahoo and Microsoft require all three for 5,000+ messages/day.
spf false
dkim true
dmarc true
threshold 5,000 messages/day
info
One-click List-Unsubscribe is a message-level header. Verify by sending a test message.
09TLSA
info
No DANE/TLSA records. DANE is not deployed for these mail servers.
RFC 7672
hosts smtp.google.com
pass
Negotiated TLSv1.3.
RFC 8996
tls_version TLSv1.3
host smtp.google.com
pass
Certificate valid for 58 more day(s).
not_after 2026-11-02T08:39:01+00:00
host smtp.google.com
pass
Certificate covers smtp.google.com.
RFC 6125
names mx.google.com, smtp.google.com, aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, gmail-smtp-in.l.google.com, alt1.gmail-smtp-in.l.google.com, alt2.gmail-smtp-in.l.google.com, alt3.gmail-smtp-in.l.google.com, alt4.gmail-smtp-in.l.google.com, gmr-smtp-in.l.google.com, alt1.gmr-smtp-in.l.google.com, alt2.gmr-smtp-in.l.google.com, alt3.gmr-smtp-in.l.google.com, alt4.gmr-smtp-in.l.google.com, mx1.smtp.goog, mx2.smtp.goog, mx3.smtp.goog, mx4.smtp.goog, aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com, aspmx5.googlemail.com, gmr-mx.google.com
host smtp.google.com
pass
Server presented a 3-certificate chain.
chain_len 3
host smtp.google.com
10MTA-STSA
info
No MTA-STS policy. Inbound mail is delivered without enforced TLS.
RFC 8461
warn
No TLS-RPT reporting address. TLS delivery failures go unreported.
RFC 8460
11BIMIA
info
No BIMI record. No brand logo is published for inboxes with BIMI support.
BIMI draft
SMTP (live probe)
info
No DANE/TLSA records. DANE is not deployed for these mail servers.
RFC 7672
hosts smtp.google.com
pass
1 of 1 MX host(s) reachable on port 25.
RFC 5321
reachable smtp.google.com
unreachable (none)
pass
Greeting is 220 with a hostname (mx.google.com).
RFC 5321
banner 220 mx.google.com ESMTP 6a1803df08f44-910407a2ff8si25084576d6.437 - gsmtp
warn
Banner hostname does not match reverse DNS.
banner_fqdn mx.google.com
ptr yucmhta-in-f26.1e100.net
pass
EHLO accepted with 6 extension(s).
RFC 5321
extensions 8BITMIME, CHUNKING, ENHANCEDSTATUSCODES, PIPELINING, SIZE, SMTPUTF8
pass
Server advertises SMTPUTF8, so it accepts internationalized (EAI) email addresses.
RFC 6531
info
Server does not advertise REQUIRETLS; senders cannot demand TLS-only delivery to this host.
RFC 8689
pass
STARTTLS is advertised in EHLO.
RFC 3207
pass
STARTTLS negotiated a working TLS session.
RFC 3207
tls_version TLSv1.3
pass
Negotiated TLSv1.3.
RFC 8996
tls_version TLSv1.3
host smtp.google.com
pass
Certificate valid for 58 more day(s).
not_after 2026-11-02T08:39:01+00:00
host smtp.google.com
pass
Certificate covers smtp.google.com.
RFC 6125
names mx.google.com, smtp.google.com, aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, gmail-smtp-in.l.google.com, alt1.gmail-smtp-in.l.google.com, alt2.gmail-smtp-in.l.google.com, alt3.gmail-smtp-in.l.google.com, alt4.gmail-smtp-in.l.google.com, gmr-smtp-in.l.google.com, alt1.gmr-smtp-in.l.google.com, alt2.gmr-smtp-in.l.google.com, alt3.gmr-smtp-in.l.google.com, alt4.gmr-smtp-in.l.google.com, mx1.smtp.goog, mx2.smtp.goog, mx3.smtp.goog, mx4.smtp.goog, aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com, aspmx5.googlemail.com, gmr-mx.google.com
host smtp.google.com
pass
Server presented a 3-certificate chain.
chain_len 3
host smtp.google.com
pass
Server refused external relay, as expected.
RFC 5321
reply 550-5.1.1 The email account that you tried to reach does not exist. Please try
pass
Server accepts the null sender (MAIL FROM:<>), so bounces and DSNs can be delivered.
RFC 5321
reply 250 2.1.0 OK 6a1803df08f44-910407a2ff8si25084576d6.437 - gsmtp

About this report

This report grades the email and DNS setup of ubuntuwic.ca against the relevant RFCs. Each check links to the standard behind the rule. A high grade means the common causes of spoofing and poor deliverability are covered. A grade is not a guarantee that every message reaches the inbox.

Frequently asked questions

What does the grade mean?
The grade summarizes how completely the domain implements the core email authentication and DNS standards. A and B mean the main protections (SPF, DKIM, DMARC, valid MX) are in place. Lower grades flag gaps that make spoofing easier or hurt deliverability. A missing MX record caps the grade at F, a weak SPF all-qualifier caps at D, and no DMARC caps at C.
How fresh is this report?
A report is a snapshot from when it was last scanned, kept as a shareable link. If you are fixing your setup, use the Re-scan button to run every check live again.
Why is the SMTP section still loading?
The live SMTP probe connects to the mail servers from a dedicated prober, which takes a few seconds and runs separately from the DNS checks. The results stream in when ready. If SMTP was not requested for this report, that section stays empty.
I own this domain and want to stop scan.mx checking it.
Domain owners can block scanning by publishing a DNS TXT record; see the opt-out page.

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