Dime Commercial Bank: email security grade A

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Dime Commercial Bank, Hauppauge, New York, is the 124th largest FDIC-insured US bank by total assets ($15bn). On 4 November 2026 the public email records of dime.com graded A: MX pass, SPF pass, DMARC p=quarantine, mail handled by Microsoft 365.

Grade A. Nothing in the records will stop mail. Read by DNS on 4 November 2026; the records are shown as published.

What was found on dime.com

Check	Result	What was published
MX	Pass	`10 dime-com.mail.protection.outlook.com`. Mail handled by Microsoft 365
SPF	Pass	`v=spf1 include:spf.protection.outlook.com include:spf.zixport.com include:spf.zixsmbhosted.com include:dime-com.spf.smtp25.com ip4:199.200.27.29 ip4:156.55.193.212 ip4:208.85.49.25 ip4:208.85.49.177 ip4:209.34.255.0/24 ip4:128.136.104.0/24 ip4:44.214.246.148 ip4:64.149.172.201 ip4:12.175.11.0/24 ip4:148.163.135.141 ip4:148.163.139.141 include:spf.cashedge.com ~all`. DNS lookups: 5 of 10 allowed; ends ~all
DMARC	Pass	`v=DMARC1; p=quarantine; rua=mailto:dmarc-reports@dime.com; ruf=mailto:dmarc-reports@dime.com; fo=1`. Policy p=quarantine; reports collected (rua= set)
DKIM	Pass, not graded	Key found on selectors selector1, s1, s2 (of 10 common selectors tried)

Where Dime Commercial Bank ranks

Dime Commercial Bank is the 124th largest FDIC-insured US bank by total assets, at $15bn as reported to the FDIC (certificate 6976; Hauppauge, New York). Among the 999 graded banks, Dime Commercial Bank ranks 95th by grade (ties broken by assets, larger first). In its asset band, $10bn to $100bn, it ranks 65th of 122; among the 49 graded banks in New York, 10th. 69.7% of its band and 73.5% of its state graded A.

What this means for the bank

The checker's own notes on each record:

MX, pass: 1 MX record. Replies have somewhere to land. Mail is handled by Microsoft 365.
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: DNS lookups: about 5 of the 10 allowed. This count is an estimate.
DMARC, pass: Policy p=quarantine: receivers are asked to put mail that fails in spam.
DMARC, info: Reports go to dmarc-reports@dime.com.
DKIM, pass: DKIM key found at selector1._domainkey.dime.com, about 2048-bit RSA.
DKIM, pass: DKIM key found at s1._domainkey.dime.com, about 1024-bit RSA.
DKIM, pass: DKIM key found at s2._domainkey.dime.com, about 1024-bit RSA.

What this means if you sell to Dime Commercial Bank

Dime Commercial Bank receives mail through Microsoft 365, whose Exchange Online Protection checks every inbound message's SPF, DKIM and DMARC and scores the sender's reputation. A clean, warmed sending domain is the minimum; a failed check lands in junk or is dropped. 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.com now for today's result. The FDIC's record of the bank is at BankFind, certificate 6976.

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 Commercial 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