# Session Log: Chris Knight Email Verification for Cascades

## User
- **User:** Howard Enos (howard)
- **Machine:** Howard-Home
- **Role:** tech

## Session Summary

Howard reported that the night person at Cascades (Chris Knight, Controller) sent him an email expressing concern about a suspicious sender. The task was to locate the email and verify whether it was legitimate.

Initial search checked Mike's mailbox (incorrect assumption based on userEmail context hint). Howard corrected that his mailbox (howard@azcomputerguru.com) was the target. The email was found: Chris Knight forwarded "FW: Doc Package | Cascades Retirement Properties, Inc. | 106513" at 5:05pm MST (2026-07-18T00:05 UTC). The original email was from Michael Rosales (michael.rosales@smflus.com) at Sumitomo Mitsui Finance and Leasing, notifying Cascades that DocuSign loan documents were incoming with access code 106513.

Full email header analysis and DNS verification of smflus.com confirmed legitimacy: enterprise Proofpoint MX, strict SPF (-all), two DocuSign TXT verification records on the domain, and the original email passed SPF/DKIM/DMARC at every hop. The only DKIM failure was at the final hop where INKY/GuruProtect modified the body to inject its banner (expected behavior). A response was drafted addressed directly to Chris Knight and sent to Howard's Discord for forwarding.

## Key Decisions

- Verified sender domain (smflus.com) via DNS rather than relying solely on email content -- MX, SPF, TXT (DocuSign verification), and DMARC records all checked.
- Analyzed full email authentication headers (ARC chain i=1 through i=4) to distinguish legitimate authentication from INKY-induced DKIM body hash failure.
- Drafted the response addressed to Chris Knight directly (second revision per Howard's request) so Howard could paste/forward it without editing.

## Problems Encountered

- Initially searched Mike's mailbox instead of Howard's. Howard corrected the target mailbox. The userEmail context hint showed mike@azcomputerguru.com but the operator was Howard.

## Configuration Changes

None.

## Credentials & Secrets

None.

## Infrastructure & Servers

- **smflus.com** (Sumitomo Mitsui Finance and Leasing Co., Ltd) -- verified legitimate domain
  - MX: mxa-00207001.gslb.pphosted.com / mxb-00207001.gslb.pphosted.com (Proofpoint)
  - SPF: v=spf1 ... include:spf.protection.outlook.com ... -all
  - DocuSign TXT records: 166ffa57-bd88-4246-9c37-efb75e12b974, ae3fa0fb-54d0-40ff-961e-ce05dc6ff4d7
  - Microsoft 365 verified: MS=ms11902861
  - Contact: Michael Rosales, AVP Contract Associate, 929-505-2172

## Commands & Outputs

- Graph API mailbox search on howard@azcomputerguru.com for Chris Knight emails
- DNS lookups (nslookup MX/TXT/A) on smflus.com
- Discord DM sent to Howard with analysis (message IDs: 1527835894617210990, 1527836204223955146)

## Pending / Incomplete Tasks

- Howard to forward the analysis to Chris Knight at Cascades.
- Chris Knight to watch for DocuSign email from @docusign.net with access code 106513.
- Meredith Kuhn (CC'd on the forward) should also receive a separate DocuSign copy.

## Reference Information

- Chris Knight email: Chris.Knight@cascadestucson.com (Controller, 603-748-3571)
- Meredith Kuhn: meredith.kuhn@cascadestucson.com
- Michael Rosales: michael.rosales@smflus.com (AVP, Contract Associate, SMFL, 929-505-2172)
- Syncro ticket #32559 (Bill.com payment -- separate, also legitimate)
- SMFL address: 666 Third Avenue, 8th Floor, New York, NY 10017
