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Banner Bank, Walla Walla, Washington, is the 116th largest FDIC-insured US bank by total assets ($17bn). On 4 November 2026 the public email records of bannerbank.com graded A: MX pass, SPF pass, DMARC p=reject, mail handled by Mimecast.
Grade A. Nothing in the records will stop mail. 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 ip4:12.129.12.96/27 ip4:63.241.158.17 ip4:74.200.32.0/19 ip4:81.93.173.201 ip4:81.93.164.103 ip4:135.84.68.123 ip4:208.86.168.7 ip4:174.128.1.123 ip4:208.185.229.41 ip4:208.185.229.42 ip4:208.185.229.43 ip4:208.185.229.44 ip4:208.185.229.45 ip4:66.179.217.30 ip4:208.75.94.0/22 ip4:207.45.164.0/24 ip4:64.106.214.50 include:spf.dynect.net include:usb._netblocks.mimecast.com include:spf.webaccess1.com include:spf.protection.outlook.com include:_spf.safewebservices.com include:spfref.jackhenry.com include:spf.infoimageinc.com ~all. DNS lookups: 7 of 10 allowed; ends ~all |
| DMARC | Pass | v=DMARC1; p=reject; rua=mailto:283bc0b0d91a332@rep.dmarcanalyzer.com; ruf=mailto:283bc0b0d91a332@for.dmarcanalyzer.com; sp=reject; fo=1;. Policy p=reject, subdomains sp=reject; reports collected (rua= set) |
| DKIM | Pass, not graded | Key found on selectors s1, s2 (of 10 common selectors tried) |
Banner Bank is the 116th largest FDIC-insured US bank by total assets, at $17bn as reported to the FDIC (certificate 28489; Walla Walla, Washington). Among the 999 graded banks, Banner Bank ranks 90th by grade (ties broken by assets, larger first). In its asset band, $10bn to $100bn, it ranks 60th of 122; among the 13 graded banks in Washington, 2nd. 69.7% of its band and 46.2% of its state graded A.
The checker's own notes on each record:
Banner 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 bannerbank.com now for today's result. The FDIC's record of the bank is at BankFind, certificate 28489.
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 Banner Bank and the records have changed, email moe@roimaxi.com and we will re-check and update this page.
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