Thomasville National Bank: email security grade C

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Thomasville National Bank, Thomasville, Georgia, is the 555th largest FDIC-insured US bank by total assets ($2.2bn). On 4 November 2026 the public email records of tnbank.com graded C: MX pass, SPF warn, DMARC p=none, mail handled by Barracuda.

Grade C. Two settings do less than they seem to. Read by DNS on 4 November 2026; the records are shown as published.

What was found on tnbank.com

Check	Result	What was published
MX	Pass	`10 d128634a.ess.barracudanetworks.com`, `20 d128634b.ess.barracudanetworks.com`. Mail handled by Barracuda
SPF	Warn	`v=spf1 include:spf.ess.barracudanetworks.com ip4:64.39.159.38 include:spf.protection.outlook.com include:spfref.jackhenry.com include:tnbank-com.spf.smtp25.com include:mailgun.org include:email.freshservice.com -all`. DNS lookups: 20 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 selector selector1 (of 10 common selectors tried)

Where Thomasville National Bank ranks

Thomasville National Bank is the 555th largest FDIC-insured US bank by total assets, at $2.2bn as reported to the FDIC (certificate 34068; Thomasville, Georgia). Among the 999 graded banks, Thomasville National Bank ranks 922nd by grade (ties broken by assets, larger first). In its asset band, $1bn to $10bn, it ranks 779th of 846; among the 12 graded banks in Georgia, 8th. 66% of its band and 58.3% 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 (fail): mail from a server that is not on the list should be rejected.
SPF, warn: DNS lookups: about 20, 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.
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 selector1._domainkey.tnbank.com, about 1024-bit RSA.

What this means if you sell to Thomasville National Bank

Thomasville National Bank routes inbound mail through Barracuda, 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 tnbank.com now for today's result. The FDIC's record of the bank is at BankFind, certificate 34068.

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 Thomasville National 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