Dime Bank: email security grade C

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Dime Bank, Norwich, Connecticut, is the 878th largest FDIC-insured US bank by total assets ($1.2bn). On 4 November 2026 the public email records of dime-bank.com graded C: MX pass, SPF warn, DMARC p=none, mail handled by Mimecast.

Grade C. Two settings do less than they seem to. Read by DNS on 4 November 2026; the records are shown as published.

What was found on dime-bank.com

Check	Result	What was published
MX	Pass	`10 us-smtp-inbound-1.mimecast.com`, `20 us-smtp-inbound-2.mimecast.com`. Mail handled by Mimecast
SPF	Warn	`v=spf1 include:_netblocks.mimecast.com include:spf.cocci.com include:spf.protection.outlook.com ip4:209.198.203.132/32 ip4:216.134.200.226/32 ip4:66.180.11.11/32 -all`. DNS lookups: 11 of 10 allowed; ends -all
DMARC	Warn	`v=DMARC1; p=none; rua=mailto:0ca2e38ada3c024@rep.dmarcanalyzer.com; ruf=mailto:0ca2e38ada3c024@for.dmarcanalyzer.com; fo=1;`. Policy p=none; 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 Dime Bank ranks

Dime Bank is the 878th largest FDIC-insured US bank by total assets, at $1.2bn as reported to the FDIC (certificate 18200; Norwich, Connecticut). Among the 999 graded banks, Dime Bank ranks 931st by grade (ties broken by assets, larger first). In its asset band, $1bn to $10bn, it ranks 788th of 846; among the 14 graded banks in Connecticut, 13th. 66% of its band and 57.1% 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 (fail): mail from a server that is not on the list should be rejected.
SPF, warn: DNS lookups: about 11, over the limit of 10 in RFC 7208. Receivers that count the same way return an error, and SPF fails for any message not matched before the limit. This count is an estimate.
DMARC, warn: Policy p=none: receivers are asked to do nothing with mail that fails. Reports are on, so you can see what fails.
DMARC, info: Reports go to 0ca2e38ada3c024@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 Dime Bank

Dime Bank 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 dime-bank.com now for today's result. The FDIC's record of the bank is at BankFind, certificate 18200.

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 Dime Bank 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