FirstBank Puerto Rico: email security grade A

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FirstBank Puerto Rico, Santurce, Puerto Rico, is the 104th largest FDIC-insured US bank by total assets ($19bn). On 4 November 2026 the public email records of 1firstbank.com graded A: MX pass, SPF pass, DMARC p=reject, mail handled by Own mail servers.

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 1firstbank.com

Check	Result	What was published
MX	Pass	`10 securemail01.1firstbank.com`. Mail handled by Own mail servers
SPF	Pass	`v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:spfhost.messageprovider.com ~all`. DNS lookups: 2 or more of 10 allowed; ends ~all
DMARC	Pass	`v=DMARC1; p=reject; sp=reject; pct=100; adkim=s; aspf=s; rua=mailto:dmarc_agg@vali.email,mailto:dmarcreporting@1firstbank.com; ruf=mailto:dmarcfailurereports@1firstbank.com; fo=1; ri=10`. Policy p=reject, subdomains sp=reject, applied to 100% of mail; reports collected (rua= set)
DKIM	Reported, not graded	No key on any of 10 common selectors. This proves nothing: the bank's real selectors may be any name

Where FirstBank Puerto Rico ranks

FirstBank Puerto Rico is the 104th largest FDIC-insured US bank by total assets, at $19bn as reported to the FDIC (certificate 30387; Santurce, Puerto Rico). Among the 999 graded banks, FirstBank Puerto Rico ranks 83rd by grade (ties broken by assets, larger first). In its asset band, $10bn to $100bn, it ranks 53rd of 122; among the 3 graded banks in Puerto Rico, 2nd. 69.7% of its band and 66.7% of its state graded A.

What this means for the bank

The checker's own notes on each record:

MX, pass: 1 MX record. 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, info: DNS lookups: at least 2 of the 10 allowed. 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=reject: receivers are asked to refuse mail that fails.
DMARC, info: Reports go to dmarc_agg@vali.email, dmarcreporting@1firstbank.com.
DKIM, info: No DKIM key at the 10 common selectors tried. That does not mean DKIM is missing. Your email provider picks the selector name, and DNS has no way to list them.

What this means if you sell to FirstBank Puerto Rico

FirstBank Puerto Rico lists MX hosts under its own domain, so it runs or fronts its own mail servers. What filters sit behind them is not visible from DNS; assume they check SPF, DKIM and DMARC like everyone else, and that a bank-run gateway is at least as strict as a commercial one. 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 1firstbank.com now for today's result. The FDIC's record of the bank is at BankFind, certificate 30387.

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 FirstBank Puerto Rico 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