Hi Kebzel,
Thank you for your inquiry.
EHLO is a raw STMP command, that is handled internally by Aspose.Email component. Currently, Aspose.Email does not allow execution of any raw command including EHLO.
I have requested a point of view from development end on this. As soon as I receive any updates, I will let you know here.
Regards,
Babar Raza
Support Developer,
Aspose Sialkot Team
http://www.aspose.com/
Aspose - Your File Format Experts