mail(): SMTP server responce: 554 problem

[mrjoseph_com]

Does anyone know why this error comes up?

Warning: mail(): SMTP server response: 554 <[e-mail]>: Recipient address rejected: Relay access denied in \nas16ent\domains\n\non-believer.com\user\htdocs\send_email\email.php on line 16

[stephaneey]

Just try to telnet your SMTP server and to type this address manually to see if it will return the same error

so,

telnet you_smtp_server 25 (25 is the default port number, otherwise check /etc/services to make sure that this is the right port)

once connected
<cr> stands for carriage return

HELO <cr>
MAIL FROM:<your@email><cr>
RCPT TO:<your_tricky_address_causing_problems><cr>
DATA<cr>
Type any data and finish by a single dot "."
quit

You'll see whether you receive the same error, if not, it means that your PHP script sends some nasty characters