I'm using Delphi 2009 and the lastest Indy 10 from svn to send e-mails using SMTP, but it doesn't work with Gmail (Google Apps hosted domain). When I try to send an e-mail I get "Must issue a STARTTLS command first".
I tried Googling about it and I found several forums and several solutions, but they all just bashed some code or just said I needed an OpenSLL DLL, which so far isn't very clear to me exactly what I need.
Can someone please tell exactly which DLL I need and what do I have to change in the my TIdSMTP and TIdMessage objects in order to send the e-mails through Gmail's SMTP server?
Also, an explanation about why this authentication is different and what the DLL is for is very welcome.
Perhaps Marco can help you...
Edit: with this link to the source code.
来源：https://stackoverflow.com/questions/1589699/how-do-i-send-e-mail-using-gmails-smtp-and-indy-10