1st Security Bank of Washington: email security grade B

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1st Security Bank of Washington, Mountlake Terrace, Washington, is the 394th largest FDIC-insured US bank by total assets ($3.2bn). On 4 November 2026 the public email records of fsbwa.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 fsbwa.com

Check	Result	What was published
MX	Pass	`10 us-smtp-inbound-2.mimecast.com`, `10 us-smtp-inbound-1.mimecast.com`. Mail handled by Mimecast
SPF	Pass	`v=spf1 include:spf1.fsbwa.com include:spf2.fsbwa.com include:spf3.fsbwa.com include:SPF4.fsbwa.com include:spf5.fsbwa.com -all`. DNS lookups: 10 or more of 10 allowed; ends -all
DMARC	Warn	`v=DMARC1; p=quarantine; sp=none; adkim=r; aspf=r; pct=100; fo=1:d:s; rf=afrf; rua=mailto:gtmuwcvl@ag.us.dmarcian.com, mailto:dmarc.rua@fsbwa.com; ruf=mailto:dmarc.ruf@fsbwa.com;`. Policy p=quarantine, subdomains sp=none, applied to 100% of mail; reports collected (rua= set)
DKIM	Pass, not graded	Key found on selectors selector1, s1, s2 (of 10 common selectors tried)

Where 1st Security Bank of Washington ranks

1st Security Bank of Washington is the 394th largest FDIC-insured US bank by total assets, at $3.2bn as reported to the FDIC (certificate 57633; Mountlake Terrace, Washington). Among the 999 graded banks, 1st Security Bank of Washington ranks 756th by grade (ties broken by assets, larger first). In its asset band, $1bn to $10bn, it ranks 615th of 846; among the 13 graded banks in Washington, 9th. 66% of its band and 46.2% 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, info: DNS lookups: at least 10 of the 10 allowed. One more sending service could push it over. This count is an estimate.
SPF, info: The record uses SPF macros, which only resolve for a real message, so the lookup count is a floor.
DMARC, pass: Policy p=quarantine: receivers are asked to put mail that fails in spam.
DMARC, warn: sp=none: mail claiming to come from a subdomain of fsbwa.com gets no policy, so the subdomains can be spoofed.
DMARC, info: Reports go to gtmuwcvl@ag.us.dmarcian.com, dmarc.rua@fsbwa.com.
DKIM, pass: DKIM key found at selector1._domainkey.fsbwa.com, about 2048-bit RSA.
DKIM, pass: DKIM key found at s1._domainkey.fsbwa.com, about 2048-bit RSA.
DKIM, pass: DKIM key found at s2._domainkey.fsbwa.com, about 2048-bit RSA.

What this means if you sell to 1st Security Bank of Washington

1st Security Bank of Washington 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 fsbwa.com now for today's result. The FDIC's record of the bank is at BankFind, certificate 57633.

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 1st Security Bank of Washington 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