B
supportics.co
Score 88/100 · 0 failing, 6 warnings
Mail provider: Zoho Mail
Check another domain Re-scan

Scanned 51 minutes ago. Re-scan for a fresh result after a fix.

Issues to fix

Results

01Mail exchangers (MX)A
pass
3 MX record(s) found.
records
preferenceexchangettl
10mx.zoho.com14400
20mx2.zoho.com14400
50mx3.zoho.com14400
warn
All MX hosts resolve to a single IP, no address-level redundancy.
ip 136.143.191.44
02Mail providerC
info
Mail provider: Zoho Mail.
provider zoho
warn
SPF does not include Zoho Mail's sending hosts (zoho.com), so Zoho Mail mail may fail SPF.
expected zoho.com
warn
Zoho Mail DKIM is not published for this domain (common for unconfigured custom domains).
selectors zoho
03SPFA
pass
SPF record present.
record v=spf1 include:zohomail.com ~all
pass
SPF uses 2 of the 10 permitted DNS lookups.
RFC 7208 §4.6.4
lookups 2
pass
~all default policy.
RFC 7208
04DKIMA
info
No DKIM selector found via common probes (a _domainkey subtree exists but no common selector matched), the domain may use a custom selector.
RFC 6376 (updated by RFC 8553, RFC 8616)
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 ns1.dns-parking.com.
rname dns.hostinger.com.
refresh 10000
retry 2400
expire 604800
minimum 600
info
Zone is not DNSSEC-signed.
RFC 9364
07BlacklistsA
pass
136.143.191.44 is not listed on PSBL.
target 136.143.191.44
list PSBL
pass
136.143.191.44 is not listed on SpamCop.
target 136.143.191.44
list SpamCop
pass
136.143.191.44 is not listed on GBUdb Truncate.
target 136.143.191.44
list GBUdb Truncate
pass
supportics.co is not listed on Spamhaus DBL.
target supportics.co
list Spamhaus DBL
pass
supportics.co is not listed on Spamhaus ZRD.
target supportics.co
list Spamhaus ZRD
pass
136.143.191.44 is not listed on Spamhaus ZEN.
target 136.143.191.44
list Spamhaus ZEN
pass
136.143.191.44 is not listed on Spamhaus AuthBL.
target 136.143.191.44
list Spamhaus AuthBL
08Bulk sending readinessA
warn
Partial bulk-sender setup, missing DKIM. Gmail/Yahoo and Microsoft require all three for 5,000+ messages/day.
spf true
dkim false
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 mx.zoho.com, mx2.zoho.com, mx3.zoho.com
pass
Negotiated TLSv1.3.
RFC 8996
tls_version TLSv1.3
host mx.zoho.com
pass
Certificate valid for 136 more day(s).
not_after 2027-01-29T23:59:59+00:00
host mx.zoho.com
pass
Certificate covers mx.zoho.com.
RFC 6125
names *.zoho.com, zoho.com
host mx.zoho.com
pass
Server presented a 2-certificate chain.
chain_len 2
host mx.zoho.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 mx.zoho.com, mx2.zoho.com, mx3.zoho.com
pass
3 of 3 MX host(s) reachable on port 25.
RFC 5321
reachable mx.zoho.com, mx2.zoho.com, mx3.zoho.com
unreachable (none)
pass
Greeting is 220 with a hostname (mx.zohomail.com).
RFC 5321
banner 220 mx.zohomail.com SMTP Server ready September 15, 2026 2:54:43 PM PDT
pass
Banner hostname matches reverse DNS.
banner_fqdn mx.zohomail.com
ptr mx.zohomail.com
pass
EHLO accepted with 2 extension(s).
RFC 5321
extensions 8BITMIME, SIZE
info
Server does not advertise SMTPUTF8; internationalized (EAI) addresses may be rejected.
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 mx.zoho.com
pass
Certificate valid for 136 more day(s).
not_after 2027-01-29T23:59:59+00:00
host mx.zoho.com
pass
Certificate covers mx.zoho.com.
RFC 6125
names *.zoho.com, zoho.com
host mx.zoho.com
pass
Server presented a 2-certificate chain.
chain_len 2
host mx.zoho.com
pass
Server refused external relay, as expected.
RFC 5321
reply 553 Relaying disallowed
pass
Server accepts the null sender (MAIL FROM:<>), so bounces and DSNs can be delivered.
RFC 5321
reply 250 Sender <> OK

About this report

This report grades the email and DNS setup of supportics.co 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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