Hi, All,
I'd been fighting with this for over a week or so and kept getting the following errors in my /var/log/zimbra.log file:
(Authentication failed: cannot SASL authenticate to server smtp.sbc.mail.yahoo4.akadns.net[68.142.229.41]: no mechanism available)
Finally, I stumbled over the magic incantation for Google and found the following at
http://www.postfix.org/SASL_README.html#debugging :
Quote:
Note: some SMTP servers support PLAIN or LOGIN authentication only. By default, the Postfix SMTP client does not use authentication methods that send plaintext passwords, and defers delivery with the following error message: "Authentication failed: cannot SASL authenticate to server". To enable plaintext authentication specify, for example:
/etc/postfix/main.cf:
smtp_sasl_security_options = noanonymous
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Once I added smtp_sasl_security_options = noanonymous , outbound mail started working and I was finally able to enjoy a hard-earned single malt scotch.
Hopefully, this will help someone else.
Brian