Timeout error occurs during submitting a mail message to an SMTP server. What's wrong?

MailBee.NET Objects MailBee.NET Objects MailBee.NET Objects .NET .NET .NET SMTP SMTP SMTP connection connection connection problem problem problem send mail send mail send mail
Probably, you're using a firewall, anti-spam or anti-virus filter which intercepts network traffic between MailBee.NET and your SMTP server, and this network filter does not actually support CHUNKING extension despite it says CHUNKING is supported. To fix this, disable this network filter or obtain its newer version without this bug. Alternatively, you can disable CHUNKING in MailBee.NET (but this will degrade performance a bit). To disable CHUNKING, use this code:

server.SmtpOptions = ExtendedSmtpOptions.NoChunking

(assuming server is an SmtpServer instance).
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