VPS and Yahoo Email Addresses

We were on a shared server but moved to a VPS. When we were on a shared server, we were able to send to Yahoo email addresses. Now, we are having a problem sending to Yahoo email addresses from Zen Cart. Emails sent through Zen Cart to Yahoo never arrive to their respective addresses. We receive no error message. Emails sent to Yahoo through an email client (Thunderbird) or through webmail on the server do arrive. Additionally, emails arrive to Hotmail, AOL and GMail when sent through Zen Cart, an email client (Thunderbird) and webmail. Help! :)

**These are our settings under Configuration-->Email Options:
**
E-Mail Transport Method sendmail --------->USE TO BE PHP WHEN ON SHARED SERVER. YAHOO EMAIL ACCOUNTS DO NOT RECEIVE WITH SENDMAIL OR PHP
E-Mail Linefeeds LF
Use MIME HTML When Sending Emails true
Send E-Mails true
Verify E-Mail Addresses Through DNS true
Email Archiving Active? true
E-Mail Friendly-Errors true
Email Address (Displayed to Contact you) [email protected]
Email Address (sent FROM) [email protected]
Emails must send from known domain? No
Email Admin Format? HTML
Send Copy of Order Confirmation Emails To [email protected]
Send Copy of Create Account Emails To - Status 1
Send Copy of Create Account Emails To [email protected]
Send Copy of Tell a Friend Emails To - Status 1
Send Copy of Tell a Friend Emails To [email protected]
Send Copy of Customer GV Send Emails To - Status 1
Send Copy of Customer GV Send Emails To [email protected]
Send Copy of Admin GV Mail Emails To - Status 1
Send Copy of Customer Admin GV Mail Emails To [email protected]
Send Copy of Admin Discount Coupon Mail Emails To - Status 1
Send Copy of Customer Admin Discount Coupon Mail Emails To [email protected]
Send Copy of Admin Orders Status Emails To - Status 1
Send Copy of Admin Orders Status Emails To [email protected]
Send Notice of Pending Reviews Emails To - Status 1
Send Notice of Pending Reviews Emails To [email protected]
Set "Contact Us" Email Dropdown List Sales (Have a question about a product or service?) [email protected]
Allow Guest To Tell A Friend true
Contact Us - Show Store Name and Address 1
Send Low Stock Emails 1
Send Low Stock Emails To [email protected]
Display "Newsletter Unsubscribe" Link? true
Audience-Select Count Display true
SMTP Email Account Mailbox [email protected]
SMTP Email Account Password
SMTP Email Mail Host mail.ourdomain.com
SMTP Email Mail Server Port 25
Convert currencies for Text emails £,£:€,€
Send Notice of Newsletter-only Subscriptions To - Status 0
Send SMS Message when a sale is made true
Send Notice of Newsletter-only Subscriptions To
Newsletter Test Group Email

Can you test this program?
(VPS is windows or non-Windows?)

<?
$to = "yahoo email id here";
$subject = "Testing Yahoo delivery";
$msg = "Testing why yahoo emails are not reaching!";
$headers = "From: [email protected]\nReply-To: [email protected]";

mail("$to", "$subject", "$msg", "$headers");
echo "Email sent!";
?>

and let me know if you recieve the email or not

Additionally in php.ini check if the sendmail_path is correct (this canbe checked using phpinfo too)

We are on a Linux server.

Did you test the mentioned program?

superprg:

Can you test this program?
(VPS is windows or non-Windows?)

> 
> Additionally in php.ini check if the sendmail_path is correct (this canbe checked using phpinfo too)

The info.php file says the following about sendmail: 
sendmail_from*no value**no value* sendmail_path/usr/sbin/sendmail -t -i/usr/sbin/sendmail -t -i
I do not know if this is correct or not. 

Additionally, what program are you talking about? Baby talk a bit... am I suppose to save what you typed in a PHP file and put it on the server? Please elaborate. More steps would be great. 

We still can't send to Yahoo email addresses from Zen Cart. 

Thanks!

Yes, save it as php file and put it on the server and run it

superprg:

Yes, save it as php file and put it on the server and run it

Ran the program. One with yahoo email the program said email send. But yahoo mail was not received.

Tested with hotmail email. This time received the email in hotmail address.

Not sure what email setting is the issue with yahoo emails.

Thanks

Does anyone have any idea what the problem could be?

If I were you, I would contact the host to find out the cause as it seems like the server problem. Which spam program is server using?