Coastal States Bank: email security grade B

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Coastal States Bank, Hilton Head Island, South Carolina, is the 501st largest FDIC-insured US bank by total assets ($2.4bn). On 4 November 2026 the public email records of coastalstatesbank.com graded B: MX pass, SPF warn, DMARC p=quarantine, mail handled by Proofpoint.

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 coastalstatesbank.com

Check	Result	What was published
MX	Pass	`10 mx1-us1.ppe-hosted.com`, `10 mx2-us1.ppe-hosted.com`. Mail handled by Proofpoint
SPF	Warn	`v=spf1 a include:spf.cashedge.com include:spf.meridianlink.com include:spf.protection.outlook.com include:coastalstatesbank-com.spf.smtp25.com include:_spf-us.ppe-hosted.com ip4:50.31.63.161 include:_spf.salesforce.com include:mail.onsetto.com ip4:44.216.154.56/29 ip4:18.246.145.200/29 ~all`. DNS lookups: 11 or more of 10 allowed; ends ~all
DMARC	Pass	`v=DMARC1; p=quarantine; rua=mailto:3766435ddfb64a528e5dea762265e84e@dmarc-reports.cloudflare.net,mailto:postmaster@coastalstatesbank.com; ruf=mailto:postmaster@coastalstatesbank.com;`. Policy p=quarantine; reports collected (rua= set)
DKIM	Pass, not graded	Key found on selector selector1 (of 10 common selectors tried)

Where Coastal States Bank ranks

Coastal States Bank is the 501st largest FDIC-insured US bank by total assets, at $2.4bn as reported to the FDIC (certificate 57756; Hilton Head Island, South Carolina). Among the 999 graded banks, Coastal States Bank ranks 789th by grade (ties broken by assets, larger first). In its asset band, $1bn to $10bn, it ranks 648th of 846; among the 14 graded banks in South Carolina, 10th. 66% of its band and 64.3% 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, warn: DNS lookups: at least 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.
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, info: Reports go to 3766435ddfb64a528e5dea762265e84e@dmarc-reports.cloudflare.net, postmaster@coastalstatesbank.com.
DKIM, pass: DKIM key found at selector1._domainkey.coastalstatesbank.com, about 1024-bit RSA.

What this means if you sell to Coastal States Bank

Coastal States Bank routes inbound mail through Proofpoint, 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 coastalstatesbank.com now for today's result. The FDIC's record of the bank is at BankFind, certificate 57756.

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 Coastal States 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