MountainOne Bank: email security grade B

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MountainOne Bank, North Adams, Massachusetts, is the 955th largest FDIC-insured US bank by total assets ($1.1bn). On 4 November 2026 the public email records of mountainone.com graded B: MX pass, SPF pass, DMARC p=none, mail handled by Other.

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 mountainone.com

Check	Result	What was published
MX	Pass	`10 east.smtp.mx.o365.serverdata.net`. Mail handled by Other
SPF	Pass	v=spf1 mx ip4:8.27.74.14 ip4:67.210.88.0/24 ip4:63.156.189.0/24 ip4:68.232.131.237 ip4:68.232.137.69 ip4:68.232.141.148 ip4:64.78.0.0/18 ip4:162.244.196.0/22 ip4:199.193.200.0/21 ip4:206.225.164.0/22 ip4:162.216.192.0/22 ip4:185.64.212.0/22 ip4:18.223.14.153 ip4:18.217.225.34 ip4:15.222.85.71 ip4:99.79.129.161 ip4:103.211.140.0/23 ip4:64.28.112.143 ip4:64.28.115.143 include:spf.protection.outlook.com include:spf.cocci.com include:spfhost.messageprovider.com include:mailgun.org include:spfref.jackhenry.com ~all. DNS lookups: 10 of 10 allowed; ends ~all
DMARC	Warn	`v=DMARC1; p=none;`. Policy p=none; reports not collected (no rua=)
DKIM	Pass, not graded	Key found on selectors s1, s2 (of 10 common selectors tried)

Where MountainOne Bank ranks

MountainOne Bank is the 955th largest FDIC-insured US bank by total assets, at $1.1bn as reported to the FDIC (certificate 90253; North Adams, Massachusetts). Among the 999 graded banks, MountainOne Bank ranks 895th by grade (ties broken by assets, larger first). In its asset band, $1bn to $10bn, it ranks 754th of 846; among the 47 graded banks in Massachusetts, 41st. 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: 1 MX record. 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: DNS lookups: about 10 of the 10 allowed. One more sending service could push it over. This count is an estimate.
DMARC, warn: Policy p=none with no rua= address. The record asks receivers to do nothing and sends you no reports.
DKIM, pass: DKIM key found at s1._domainkey.mountainone.com, about 2048-bit RSA.
DKIM, pass: DKIM key found at s2._domainkey.mountainone.com, about 1024-bit RSA.

What this means if you sell to MountainOne Bank

MountainOne Bank's MX hosts belong to a provider we do not name from host names alone. Assume the inbound server checks SPF, DKIM and DMARC and scores reputation, as every major provider does. 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 mountainone.com now for today's result. The FDIC's record of the bank is at BankFind, certificate 90253.

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 MountainOne 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