> I've change configuration of sendmail to:
> 3. Sendmail or SMTP : SMTP
> SMTP Settings
> 4. SMTP Server : domain.com
> 5. SMTP Port : 465
> 6. POP before SMTP : false
> 7. SMTP Authentication : login (with IMAP username and password)
> 8. Secure SMTP (TLS) : true
> I can send email but I recive warning from my postfix:
> postfix/smtpd: warning: network_biopair_interop: error writing 37
> bytes to the network: Broken pipe
> Any ideas how to fix the pipe?
Sorry, I just tested this and it works for me. I'm inclined to think
there is some kind of incompatibility between your PHP and Postfix
versions (or a Postfix configuration issue). You may want to sniff
the connection and ask the Postfix community for assistance.