bt.com

Checked 5/14/2026, 10:50:55 PM · 2392ms

Solid: p=reject is enforced.

DMARC record

v=DMARC1; p=reject; fo=1; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]

Policy (p): reject
Subdomain policy (sp): inherits p=reject
Enforcement % (pct): 100%
DKIM alignment (adkim): unset · defaults to r (relaxed)
SPF alignment (aspf): unset · defaults to r (relaxed)
Aggregate reports (rua): mailto:[email protected], mailto:[email protected]
Failure reports (ruf): mailto:[email protected], mailto:[email protected]

All tags (5)

vDMARC1DMARC version
prejectPolicy for the domain
fo1Failure reporting options
ruamailto:[email protected],mailto:[email protected]Aggregate report URIs
rufmailto:[email protected],mailto:[email protected]Forensic (failure) report URIs

SPF record

Found on the apex domain.

v=spf1 include:spf.protection.outlook.com include:www.thrs.bt.com include:smtp1.bt.com ip4:62.7.242.136/29 ip4:62.239.224.234/31 ip4:62.239.224.236/31 ip4:62.239.224.98/31 ip4:193.113.108.40/31 ip4:212.140.59.179 ip4:212.140.56.164 ip4:212.49.128.65 ip4:200.47.123.3 ip4:147.149.196.177 ip4:147.149.100.81 ip4:147.149.196.181 ip4:147.149.100.78 ~all

Recommendations

DKIM alignment (adkim) is unset, so it defaults to r (relaxed). That is fine for most deployments. Set adkim=s explicitly only if your DKIM d= header matches the From: domain exactly.
SPF alignment (aspf) is unset, so it defaults to r (relaxed). That is fine for most deployments. Set aspf=s explicitly only if your Return-Path aligns with the From: domain exactly.

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