> Source: [sk105584](https://support.checkpoint.com/results/sk/sk105584)

# sk105584 - Two Factor Authentication with e-mail does not work on Mobile Access blade 

| Property | Value |
|----------|-------|
| Solution ID | sk105584 |
| Date Created | 2015-04-26 |
| Last Modified | 2017-04-17 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |

## Symptoms

- * Two Factor Authentication with e-mail does not work on Mobile Access blade.  

* SmartView Tracker shows the following log:  

  `Type: Log`  
  `
  Product: Mobile Access`  
  ` 
  Reason: Failed to send an SMS with a verification code.`  

* *$CVPNDIR/log/cvpnd.elg* file shows:  

  `
  [AUTHNMAN] [CVPN_WARNING] Cvpn::SecAuthManager::handleCurlStatusCode: Failed to send an SMS (libCURL status code: -1) with a verification code`  
  `
  [AUTHNMAN] [CVPN_INFO] Cvpn::SecAuthSession::setSmsLogReason: smsLogReason: Failed to send an SMS with a verification code`  

* Debug of CVPND daemon (per [sk104577](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk104577), [sk99053](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk99053)) shows in the *$CVPNDIR/log/cvpnd.elg\** files:  

  ```
  
  An RPC request was sent to proc server:
  [RPC] Request: (
    :method (RunProcReq)
    :params (RpcProcRequest
      :m_cookie (string
        :value (***)
      )
      ... ...
      : (string
        :value ("mail:TO=[destination e-mail address];SMTPSERVER=10.254.101.31;FROM=[origin e-mail address];BODY=Mobile Access DynamicID one time password: XXXXXX
        ")
      )
    )
  )
  )
  
  Response: (
    :value (RpcProcResponse
      :m_status (int
        :value (-1)
      )
    )
  )
  ```

## Cause

IIS logs on the Exchange Server show SMTP Error 550 (mailbox does not exist - refer to [RFC 5321](https://www.rfc-editor.org/info/rfc5321)). As a result, Exchange Server refuses to send the e-mail.

*Example*:

![](https://sc1.checkpoint.com/sc/SolutionsStatics/sk105584/Exchange-Server1505071036.jpg)

## Solution

This solution requires authentication. Please log in to view the full solution.

---

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