According to bluehost, you cannot send emails through SMTP connections from web applications hosted on bluehost. They only allow sending through their own SMTP servers.
The problem I had was trying to send emails in Magento using GMAIL (Google Apps) using the code from this forum:
The work around is that I setup a email account in Bluehost the same as the email I use in Google Apps. I then modified the code in Magento to send out using bluehost’s SMTP servers:
Outgoing Mail Server: (SSL) boxnumber.bluehost.com (server requires authentication)
Supported Incoming Mail Protocols:
- POP3: port 110
- POP3S (SSL/TLS): port 995
- IMAP: port 143
- IMAPS (SSL/TLS): port 993
Supported Outgoing Mail Protocols:
- SMTP: port 26
- SMTPS (SSL/TLS): port 465
And it works, it sends the email out to the customers with the right email address sent from bluehost’s local SMTP servers, so when customers reply to the email address it will arrive in my google apps mail box.