City Bank: email security grade A

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City Bank, Lubbock, Texas, is the 264th largest FDIC-insured US bank by total assets ($5.4bn). On 4 November 2026 the public email records of city.bank graded A: MX pass, SPF pass, DMARC p=reject, mail handled by Proofpoint.

Grade A. Nothing in the records will stop mail. Read by DNS on 4 November 2026; the records are shown as published.

What was found on city.bank

Check	Result	What was published
MX	Pass	`10 mxa-003a5e01.gslb.pphosted.com`, `10 mxb-003a5e01.gslb.pphosted.com`. Mail handled by Proofpoint
SPF	Pass	`v=spf1 include:spf-003a5e01.pphosted.com include:spf.zixsmbhosted.com include:_spf.mailgun.org include:spf.protection.outlook.com include:spf.bombbomb.email ip4:12.147.149.0/24 ip4:66.231.88.130 ip4:72.249.136.116 ip4:107.20.210.250 ip4:52.252.165.197 ip4:52.252.212.226 ip4:52.249.26.186 ip4:52.249.26.214 ip4:216.58.153.100 ip4:207.38.115.200 ip4:72.32.3.218 ip4:52.1.14.157 ip4:54.240.124.239 ip4:44.214.246.148/32 -all`. DNS lookups: 8 of 10 allowed; ends -all
DMARC	Pass	`v=DMARC1; p=reject; rua=mailto:postmaster@city.bank`. Policy p=reject; reports collected (rua= set)
DKIM	Pass, not graded	Key found on selectors selector1, selector2 (of 10 common selectors tried)

Where City Bank ranks

City Bank is the 264th largest FDIC-insured US bank by total assets, at $5.4bn as reported to the FDIC (certificate 25103; Lubbock, Texas). Among the 999 graded banks, City Bank ranks 193rd by grade (ties broken by assets, larger first). In its asset band, $1bn to $10bn, it ranks 78th of 846; among the 86 graded banks in Texas, 15th. 66% of its band and 76.7% 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: about 8 of the 10 allowed. One more sending service could push it over. This count is an estimate.
DMARC, pass: Policy p=reject: receivers are asked to refuse mail that fails.
DMARC, info: Reports go to postmaster@city.bank.
DKIM, pass: DKIM key found at selector1._domainkey.city.bank, about 1024-bit RSA.
DKIM, pass: DKIM key found at selector2._domainkey.city.bank, about 2048-bit RSA.

What this means if you sell to City Bank

City 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 city.bank now for today's result. The FDIC's record of the bank is at BankFind, certificate 25103.

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 City 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