problem: mail() with subdomain in TO address

[Bobby Ray]

Hi PHP People,

When using mail() with a TO address that includes a subdomain, as in
foo@sub.domain. com, the intended recipient never receives the mail.

I'm not sure if this is a problem with mail() or a misconfiguratio n of
the mail program (postfix on dev server, qmail on production server),
but foo@sub.domain. com doesn't receive any mail, while foo@domain.com
gets it every time.

Any thoughts will be greatly appreciated!

echo 'mail() test - WITHOUT SUBDOMAIN<br />';
// this works fine
mail(
'foo@domain.com ',
'this is the subject',
'this is the message',
"From: bar@domain.com\r\n"
);

echo 'mail() test - WITH SUBDOMAIN';
// this doesn't work
mail(
'foo@sub.domain .com',
'this is the subject',
'this is the message',
"From: bar@domain.com\r\n"
);

[Pedro Graca]

Re: problem: mail() with subdomain in TO address

Bobby Ray wrote:[color=blue]
> When using mail() with a TO address that includes a subdomain, as in
> foo@sub.domain. com, the intended recipient never receives the mail.
>
> I'm not sure if this is a problem with mail() or a misconfiguratio n of
> the mail program (postfix on dev server, qmail on production server),
> but foo@sub.domain. com doesn't receive any mail, while foo@domain.com
> gets it every time.
>
> Any thoughts will be greatly appreciated![/color]


Probably the mail configuration for "domain.com " and "sub.domain.com "
doesn't allow it.



$ host -tmx domain.com
domain.com mail is handled by 10 mail.domain.com .

$ host -tmx sub.domain.com
Host sub.domain.com not found: 3(NXDOMAIN)

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[Bobby Ray]

Re: problem: mail() with subdomain in TO address

Pedro Graca wrote:[color=blue]
>
> Probably the mail configuration for "domain.com " and "sub.domain.com "
> doesn't allow it.
>
> $ host -tmx domain.com
> domain.com mail is handled by 10 mail.domain.com .
>
> $ host -tmx sub.domain.com
> Host sub.domain.com not found: 3(NXDOMAIN)[/color]

Dear Pedro,

Thanks for the suggestion.

In my php script the address with the subdomain never changes. It's a
good address with nice MX records to make it go. It works every time
I send something to it from win98/Outlook Express, but it doesn't "go"
when I use it as the TO address with mail() in a PHP page on a couple
Linux servers, one using qmail, the other using postfix.

Any other suggestions?

Best wishes,

Bobby

[Pedro Graca]

Re: problem: mail() with subdomain in TO address

Bobby Ray wrote:[color=blue]
> In my php script the address with the subdomain never changes. It's a
> good address with nice MX records to make it go. It works every time
> I send something to it from win98/Outlook Express, but it doesn't "go"
> when I use it as the TO address with mail() in a PHP page on a couple
> Linux servers, one using qmail, the other using postfix.
>
> Any other suggestions?[/color]

When you examine the full headers of messages received on "domain.com "
and "sub.domain.com " do you notice anything peculiar?


Can you telnet to the mail server and look at its messages?

pedro$ telnet domain.com 25
< Trying [IP.ADDRESS]...
< Connected to domain.com.
< Escape character is '^]'.
< 220 Ready
MAIL FROM: <hexkid@hotpop. com>
< 250 Ok
RCPT TO: user@mail.domai n.com
< 250 Ok
DATA
< 354 End data with <CR><LF>.<CR><L F>
body