I'm using Wordpress and sending email via Gmail SMTP:
- server:
smtp.gmail.com - port:
465
I created Google Apps main domain called domain.com and email info@domain.com.
Then I registered domain aliases for domain.com.
I have more different domains/sites: domain1.com, domain2.com.
When I try to send email to info@domain.com from Wordpress site (e.g. www.domain1.com), it works. If I try to send email to any alias (e.g. info@domain1.com or info@domain2.com), it doesn't. I don't know why.
For your information, if I try to send email from my Hotmail account it works, I can send to all aliases.