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Exchange Bank, Santa Rosa, California, is the 390th largest FDIC-insured US bank by total assets ($3.2bn). On 4 November 2026 the public email records of exchangebank.com graded B: MX pass, SPF pass, DMARC p=reject, 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.
| Check | Result | What was published |
|---|---|---|
| MX | Pass | 10 usb-smtp-inbound-1.mimecast.com, 10 usb-smtp-inbound-2.mimecast.com. Mail handled by Mimecast |
| SPF | Pass | v=spf1 ip4:199.83.180.0/22 exists:%{i}.spf.hc5482-5.iphmx.com include:amazonses.com include:_spf1.mailgun.org include:_spf2.mailgun.org include:_spf.psm.knowbe4.com include:spf.protection.outlook.com include:spfhost.messageprovider.com include:usb._netblocks.mimecast.com ip4:208.93.24.0/21 ip4:173.252.174.37/31 ip4:173.252.174.40/30 ip4:173.252.174.44/31 ip4:173.252.174.46 ip4:8.33.81.192 ip4:12.189.22.0/24 ip4:12.186.70.0/23 ip4:192.0.48.0/20 ip4:199.85.116.25 ip4:208.252.57.192/27 ip4:208.86.168.7 ip4:63.117.120.96/27 ip4:69.38.149.224/27 ip4:40.67.138.95 ip4:20.186.91.19 ip4:20.186.19.39 ip4:20.186.91.218 ip4:158.228.129.79 ip4:158.228.200.70 ip4:209.34.255.0/24 ip4:128.136.104.0/24 ip4:44.214.246.148/32 ~all. DNS lookups: 8 or more of 10 allowed; ends ~all |
| DMARC | Warn | v=DMARC1; p=reject; sp=none; rua=mailto:hcr8iw4q@ag.dmarcian.com,mailto:mailauth-reports@exchangebank.com; ruf=mailto:hcr8iw4q@fr.dmarcian.com,mailto:mailauth-reports@exchangebank.com; adkim=r; aspf=r; fo=1; pct=100;. Policy p=reject, 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) |
Exchange Bank is the 390th largest FDIC-insured US bank by total assets, at $3.2bn as reported to the FDIC (certificate 8468; Santa Rosa, California). Among the 999 graded banks, Exchange Bank ranks 755th by grade (ties broken by assets, larger first). In its asset band, $1bn to $10bn, it ranks 614th of 846; among the 58 graded banks in California, 43rd. 66% of its band and 62.1% of its state graded A.
The checker's own notes on each record:
Exchange 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.
The records above are from 4 November 2026. Run the same check on exchangebank.com now for today's result. The FDIC's record of the bank is at BankFind, certificate 8468.
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 Exchange 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
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