through contact_us page, can not receive the gmail

zen cart v 1.39h

through contact_us page, can not receive the email

Title Value Action
E-Mail Transport Method PHP
E-Mail Linefeeds LF Info
Use MIME HTML When Sending Emails false Info
Send E-Mails true Info
Email Archiving Active? false Info
E-Mail Friendly-Errors false Info
Email Address (Displayed to Contact you) xxxxx###################### Info
Email Address (sent FROM) xxxxx###################### Info
Emails must send from known domain? No Info
Email Admin Format? TEXT Info
Send Copy of Order Confirmation Emails To xxxxx###################### Info
Send Copy of Create Account Emails To - Status 0 Info
Send Copy of Create Account Emails To xxxxx###################### Info
Send Copy of Tell a Friend Emails To - Status 0 Info
Send Copy of Tell a Friend Emails To xxxxx###################### Info
Send Copy of Customer GV Send Emails To - Status 0 Info
Send Copy of Customer GV Send Emails To xxxxx###################### Info
Send Copy of Admin GV Mail Emails To - Status 0 Info
Send Copy of Customer Admin GV Mail Emails To xxxxx###################### Info
Send Copy of Admin Discount Coupon Mail Emails To - Status 0 Info
Send Copy of Customer Admin Discount Coupon Mail Emails To xxxxx###################### Info
Send Copy of Admin Orders Status Emails To - Status 0 Info
Send Copy of Admin Orders Status Emails To xxxxx###################### Info
Send Notice of Pending Reviews Emails To - Status 0 Info
Send Notice of Pending Reviews Emails To xxxxx###################### Info
Set "Contact Us" Email Dropdown List Info
Allow Guest To Tell A Friend false Info
Contact Us - Show Store Name and Address 1 Info
Send Low Stock Emails 0 Info
Send Low Stock Emails To xxxxx###################### Info
Display "Newsletter Unsubscribe" Link? true Info
Audience-Select Count Display true Info
SMTP Email Account Mailbox xxxxx###################### Info
SMTP Email Account Password ********* Info
SMTP Email Mail Host smtp.gmail.com Info
SMTP Email Mail Server Port 465 Info
Convert currencies for Text emails £,£ Info

What web host do you use? Have you tried send mail rather than using sendmail or sendmail -f, does it give you any kind of errors when you tell it to send. What is the url of the store. Have you added any mods to the site. Have you made any other changes to the site. Has this ever worked, when did it stop working, or when did you notice that is was not working.