Hi, I discovered that one of my clients had been sending spam through his virtual server. This was probably caused by a virus on his computer. He has now corrected the problem.
I turned off his email and after the problem was solved, chnaged his password and I turned it back on again in the ' Edit virtual server - Enabled features'
But now when I try to send an email to my client at firstname.lastname@example.org I am getting the following message:
'An error occurred while sending mail. The mail server responded: 5.1.1 Thom@sibloans.com: Recipient address rejected: User unknown in virtual alias table. Please check the message recipient Thom@sibloans.com and try again.'
When I try and access his account in Usermin, I get:
'Failed to login to IMAP server : Authentication failed.'