I have twice attempted to send an e-mail via the request info button on a volunteers record and received the error message in italics below. I would not normally use this button as I request more info when I import volunteers and that has been working correctly (I haven’t checked that today yet). The reason for using the other button was to resend an e-mail as the volunteer said the link was not working to update her information, is there any way that this can also be checked please as volunteers do say this from time to time, although for others it seems to be working correctly. I would be grateful for any info about this. I have e-mailed support but am also posting this on the forum to see if others have had a problem.
An error occurred when CiviCRM attempted to send an email (via SMTP). If you received this error after submitting on online contribution or event registration - the transaction was completed, but we were unable to send the email receipt.
The mail library returned the following error message:
authentication failure [SMTP: Invalid response code received from SMTP server while sending email. This is often caused by a misconfiguration in Outbound Email settings. Please verify the settings at Administer CiviCRM >> Global Settings >> Outbound Email (SMTP). (code: 435, response: 4.7.8 Error: authentication failed: UGFzc3dvcmQ6)]
This is probably related to a problem in your Outbound Email Settings (Administer CiviCRM » System Settings » Outbound Email), OR the FROM email address specifically configured for your contribution page or event. Possible causes are:
- Your SMTP Username or Password are incorrect.
- Your SMTP Server (machine) name is incorrect.
- You need to use a Port other than the default port 25 in your environment.
- Your SMTP server is just not responding right now (it is down for some reason).
- The FROM Email Address configured for this feature may not be a valid sender based on your email service provider rules.