Hi Team,
We are getting this error on a site upgraded to Dw 9.8.5. This worked prior to that version.This is the error in the EmailHander log
[4/23/2020 2:03:35 PM]: Error: System.Exception: No valid SMTP host found. Please specify a valid SMTP host in Control Panel. Errors: smtp.mailtrap.io: System.Net.Mail.SmtpException: Failure sending mail. ---> System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 107.21.132.128:25
at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception)
--- End of inner exception stack trace ---
at System.Net.ServicePoint.GetConnection(PooledStream PooledStream, Object owner, Boolean async, IPAddress& address, Socket& abortSocket, Socket& abortSocket6)
at System.Net.PooledStream.Activate(Object owningObject, Boolean async, GeneralAsyncDelegate asyncCallback)
at System.Net.ConnectionPool.GetConnection(Object owningObject, GeneralAsyncDelegate asyncCallback, Int32 creationTimeout)
at System.Net.Mail.SmtpConnection.GetConnection(ServicePoint servicePoint)
at System.Net.Mail.SmtpClient.GetConnection()
at System.Net.Mail.SmtpClient.Send(MailMessage message)
--- End of inner exception stack trace ---
at System.Net.Mail.SmtpClient.Send(MailMessage message)
at Dynamicweb.Mailing.EmailHandler.SendUsingSmptProtocol(MailMessage mailMessage, SmtpSender sender, List`1 hostList)
at Dynamicweb.Mailing.EmailHandler.SendUsingSmptProtocol(MailMessage mailMessage, SmtpSender sender, List`1 hostList)
at Dynamicweb.Mailing.EmailHandler.Send(MailMessage mailMessage, Boolean logging, Boolean throwException, String username, String password, Int32 port, Boolean useSsl, String host)
