XAMPP mails send from localhost using sendmail

In the local development on Windows with XAMPP, you must can send naturally also mails and conduct tests.

Without a configuration of sendmail do you get following error on Windows:

mail() [<a href='http://www.php.net/function.mail'>function.mail</a>]: "sendmail_from" not set in php.ini or custom "From:"

With the following settings, it is possible to send SMTP mail z.B locally. using PHPMailer or WordPress wp_mail().

The following steps are necessary for this to about sendmail to send mails, What is included in XAMPP:

1. In der xampp/sendmail/sendmail.ini muss ein gültiges E-Mail Konto angegeben werden, über welches E-Mails versendet werden sollen:


2. XAMPP/PHP/PHP.ini settings (Uncomment):

[mail function]
; For Win32 only.
; http://php.net/smtp
SMTP = localhost
; http://php.net/smtp-port
smtp_port = 587

; For Win32 only.
; http://php.net/sendmail-from
sendmail_from = postmaster@localhost

; For Unix only.  You may supply arguments as well (default: "sendmail -t -i").
; http://php.net/sendmail-path
sendmail_path = "\"\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(), even in safe mode.
;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

; Log all mail() calls including the full path of the script, line #, to address and headers
mail.log = "\xampp\apache\logs\php_mail.log"

Damit wird aktiviert, dass ein Fehler Log geschrieben wird.

Then the Apache must be restarted and now can with PHP mail()-Command messages sent is XAMPP on Windows..

Possible bug in the Sendmail error log: sendmail.log

errormsg='cannot connect to localhost, port foo: Permission denied'

Can no mail be sent via the port, It can be sent through an alternate port, as e.g.. at one Hotmail account

tls_certcheck off
  1. Hallo Herr Viereck,
    möchte Mails über sendmail verschicken, bin nach der Anleitung vorgegangen,
    aber irgendwo ist ein Fehler.
    Können Sie mir helfen?
    Besten Dank im voraus
    Grus André

    [mail function]
    ; XAMPP: Comment out this if you want to work with an SMTP Server like Mercury
    SMTP = localhost
    smtp_port = 25

    ; For Win32 only.
    ; http://php.net/sendmail-from
    sendmail_from = postmaster@localhost

    ; configuration for fake sendmail

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


    ; you must change mail.mydomain.com to your smtp server,
    ; or to IIS's “pickup” directory. (generally C:\Inetpubmailrootpickup)
    ; 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. 1und1. de

    ; smtp port (normally 25)

    smtp_port = 587

    ; SMTPS (SSL) support
    auto = use SSL for port 465, otherwise try to use TLS
    ; sl = always 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


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


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


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

    auth_password = X

    ; 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 manually set the ehlo/helo name if required

    hostname = 1und1