When using the Forward, Reply, and Send to Me buttons in the Archive Manager website the message is not sent and "Failure sending mail" is displayed at the bottom.
The following corresponding error is also found in Event Viewer:
System.Net.Mail.SmtpException: Failure sending mail. ---> System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it <ip address>:25
at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
at System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP)
at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)
--- End of inner exception stack trace ---
MailServer in the Archive Manager Configuration Editor needs to be pointed to a server capable of relaying SMTP traffic.
Change 'MailServer' in the Config Editor to be a Transport server name and stop/start the WWW service on the Archive Manager server.
The MailServer field in the Config Editor is only used for SMTP forwarding, it is not referenced by any other operations.