get error trying to use yahoo mail

[breilly00]

get this in access log error
::1 - - [06/Apr/2023:11:01:19 -0400] "GET /testmail.php HTTP/1.1" 200 23 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36"

PHP contents

[mail function]
; For Win32 only.
; https://php.net/smtp
SMTP=localhost
; https://php.net/smtp-port
;smtp_port=25
smtp_port=465

; For Win32 only.
; https://php.net/sendmail-from
;sendmail_from = me@example.com

; For Unix only. You may supply arguments as well (default: "sendmail -t -i").
; https://php.net/sendmail-path

sendmail_path = "\"c:\xampp\sendmail\sendmail.exe\" -t"

; Force the addition of the specified parameters to be passed as extra parameters
; to the sendmail binary. These parameters will always replace the value of
; the 5th parameter to mail().
;mail.force_extra_parameters =

; Add X-PHP-Originating-Script: that will include uid of the script followed by the filename
mail.add_x_header=Off

; The path to a log file that will log all mail() calls. Log entries include
; the full path of the script, line number, To address and headers.
;mail.log =
; Log mail to syslog (Event Log on Windows).
;mail.log = syslog


SEND MAIL
; configuration for fake sendmail

; if this file doesn't exist, sendmail.exe will look for the settings in
; the registry, under HKLM\Software\Sendmail

[sendmail]

; you must change mail.mydomain.com to your smtp server,
; or to IIS's "pickup" directory. (generally C:\Inetpub\mailroot\Pickup)
; emails delivered via IIS's pickup directory cause sendmail to
; run quicker, but you won't get error messages back to the calling
; application.

smtp_server=smtp.mail.yahoo.com

; smtp port (normally 25)

smtp_port=465

; SMTPS (SSL) support
; auto = use SSL for port 465, otherwise try to use TLS
; ssl = alway use SSL
; tls = always use TLS
; none = never try to use SSL

smtp_ssl=auto

; the default domain for this server will be read from the registry
; this will be appended to email addresses when one isn't provided
; if you want to override the value in the registry, uncomment and modify

;default_domain=mydomain.com

; log smtp errors to error.log (defaults to same directory as sendmail.exe)
; uncomment to enable logging

error_logfile=error.log

; create debug log as debug.log (defaults to same directory as sendmail.exe)
; uncomment to enable debugging

debug_logfile=debug.log

; if your smtp server requires authentication, modify the following two lines

auth_username=name@yahoo.com
auth_password=xxxxxxxxxxxxxxxxxxx

; if your smtp server uses pop3 before smtp authentication, modify the
; following three lines. do not enable unless it is required.

pop3_server=
pop3_username=
pop3_password=

; force the sender to always be the following email address
; this will only affect the "MAIL FROM" command, it won't modify
; the "From: " header of the message content

force_sender=

; force the sender to always be the following email address
; this will only affect the "RCTP TO" command, it won't modify
; the "To: " header of the message content

force_recipient=

; sendmail will use your hostname and your default_domain in the ehlo/helo
; smtp greeting. you can m

CODE
<?php
$to = myemail@yahoo.com';
$subject = 'Hello from XAMPP!';
$message = 'This is a test';
$headers = "From: your@email-address.com\r\n";
if (mail($to, $subject, $message, $headers)) {
echo "SUCCESS";
} else {
echo "ERROR";
}

[breilly00]

Tried to run testmail.php again and original error no longer occured.
Instead got this error - Email Sending failed.

Error log said nothing, access log said this
::1 - - [23/Apr/2023:09:39:53 -0400] "GET /testmail.php HTTP/1.1" 200 23 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36"

Added servername localhost and commented out original line of code

# General setup for the virtual host
DocumentRoot "C:/xampp/htdocs"
#ServerName www.example.com:443
Servername localhost
ServerAdmin admin@example.com
ErrorLog "C:/xampp/apache/logs/error.log"
TransferLog "C:/xampp/apache/logs/access.log"

Restarted apache got this error
Email sending failed...

with nothing in apache error log

[Nobbie]

PHP contents

What is "PHP contents"??