Dedham Institution for Savings: email security grade B

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Dedham Institution for Savings, Dedham, Massachusetts, is the 473rd largest FDIC-insured US bank by total assets ($2.6bn). On 4 November 2026 the public email records of dedhamsavings.com graded B: MX pass, SPF pass, DMARC p=quarantine, mail handled by Mimecast.

Grade B. One setting does less than it seems to. Read by DNS on 4 November 2026; the records are shown as published.

What was found on dedhamsavings.com

Check	Result	What was published
MX	Pass	`10 us-smtp-inbound-1.mimecast.com`, `10 us-smtp-inbound-2.mimecast.com`. Mail handled by Mimecast
SPF	Pass	`v=spf1 redirect=2iw6cidk._spf._d.mim.ec`. DNS lookups: 8 of 10 allowed; ends ~all
DMARC	Warn	`v=DMARC1; p=quarantine; rua=mailto:3d91b95d79d4490@rep.dmarcanalyzer.com; ruf=mailto:3d91b95d79d4490@for.dmarcanalyzer.com; pct=25; fo=1;`. Policy p=quarantine, applied to 25% of mail; reports collected (rua= set)
DKIM	Reported, not graded	No key on any of 10 common selectors. This proves nothing: the bank's real selectors may be any name

Where Dedham Institution for Savings ranks

Dedham Institution for Savings is the 473rd largest FDIC-insured US bank by total assets, at $2.6bn as reported to the FDIC (certificate 23620; Dedham, Massachusetts). Among the 999 graded banks, Dedham Institution for Savings ranks 782nd by grade (ties broken by assets, larger first). In its asset band, $1bn to $10bn, it ranks 641st of 846; among the 47 graded banks in Massachusetts, 33rd. 66% of its band and 61.7% of its state graded A.

What this means for the bank

The checker's own notes on each record:

MX, pass: 2 MX records. Replies have somewhere to land.
SPF, pass: One SPF record, ending in ~all (softfail): mail from a server that is not on the list is treated as suspect.
SPF, info: The record hands over to 2iw6cidk._spf._d.mim.ec with redirect=, so its ending comes from that record.
SPF, info: DNS lookups: about 8 of the 10 allowed. One more sending service could push it over. This count is an estimate.
DMARC, pass: Policy p=quarantine: receivers are asked to put mail that fails in spam.
DMARC, warn: pct=25: the policy covers only 25% of mail that fails.
DMARC, info: Reports go to 3d91b95d79d4490@rep.dmarcanalyzer.com.
DKIM, info: No DKIM key at the 10 common selectors tried. That does not mean DKIM is missing. Your email provider picks the selector name, and DNS has no way to list them.

What this means if you sell to Dedham Institution for Savings

Dedham Institution for Savings routes inbound mail through Mimecast, a filtering gateway. Expect strict inbound filtering: a message from a sender whose SPF, DKIM or DMARC fails, or whose domain has little sending history, is unlikely to reach a person. Before you send, run your own domain through the email setup checker and publish a policy with the DMARC record generator. For how a bank buys, see the selling to banks playbook.

Check it live

The records above are from 4 November 2026. Run the same check on dedhamsavings.com now for today's result. The FDIC's record of the bank is at BankFind, certificate 23620.

This page is one of 1,000 in the Bank Email Readiness Index Q4 2026, published 4 November 2026 and re-read every quarter; the next edition is due 2 February 2027. If you work at Dedham Institution for Savings and the records have changed, email moe@roimaxi.com and we will re-check and update this page.

ROI Maximizer is a trading name of M Ventures LTD, registered in England and Wales, company no. 15554493. Registered office: 4 Beau Street, Bath BA1 1QY, United Kingdom. moe@roimaxi.com