SMTP within a PHP/MySQL shopping Cart Script

[D-Litz]

Hopefully someone could help track down an issue we are seeing with using SMTP email option inside a shopping cart script called CS-Cart.

We have client that just report to us that when he configures the CS-Cart script to use SMTP for email, he gets the following message...

"Could not connect to SMTP server" when attempting to send.

Checking the logs revealed the following entries.

[error] [client xx.173.63.254] PHP Warning: fsockopen() [function.fsockopen]: unable to connect to mail.brand-buyer.com:25 (Connection timed out) in /home/XXXXXX/public_html/lib/phpmailer/class.smtp.php on line 107

[error] [client xx.173.63.254] PHP Fatal error: Class 'csPHPMailer' not found in /home/XXXXXX/public_html/addons/news_and_emails/func.php on line 674

I looked through our cPanel/WHM Exim Settings and the Tweak Settings and did not see anything out of the ordinary.


Any ideas?

Thanks

[Infopro]

Is this a valid domain? mail.brand-buyer.com

[D-Litz]

Is this a valid domain? mail.brand-buyer.com

Yes, all of our clients accounts use mail.domain.tld for both POP3 and SMTP.

Curious as to why you would ask that?

I forgot to add we are running

cPanel 11.24.4-C36167 - WHM 11.24.2 - X 3.9
REDHAT Enterprise 5.3 i686 standard

[d_t]

Take a look at WHM -> Security Center -> SMTP Tweak
Turn it off and use other protections instead (like ConfigServer CSF)

[D-Litz]

Take a look at WHM -> Security Center -> SMTP Tweak
Turn it off and use other protections instead (like ConfigServer CSF)

The SMTP Tweak is disabled.

ConfigServer Security & Firewall - csf v4.70
Firewall Status: Enabled and Running

We have had this in place since day one, any other ideas?

[Infopro]

Yes, all of our clients accounts use mail.domain.tld for both POP3 and SMTP.

Curious as to why you would ask that?

I forgot to add we are running

cPanel 11.24.4-C36167 - WHM 11.24.2 - X 3.9
REDHAT Enterprise 5.3 i686 standard

mxtoolbox.com

ns2.cyberlnc.com did not respond with MX records for 'brand-buyer.com'

intodns.com/brand-buyer.com

Oh well, I did not detect any MX records so you probably don't have any and if you know you should have then they may be missing at your nameservers!

[D-Litz]

mxtoolbox.com

ns2.cyberlnc.com did not respond with MX records for 'brand-buyer.com'

intodns.com/brand-buyer.com

Oh well, I did not detect any MX records so you probably don't have any and if you know you should have then they may be missing at your nameservers!

Please forgive my ignorance, but what does DNS/MX records have to do with a script that is setup to use SMTP as the email transport on the same server as the email system.

This client has there MX record pointing to a google account, however even with those SMTP setting, connecting to the SMTP server still fails.

I even setup the same shopping cart script under a test account and received the same errors and my MX records are pointing to the same mail server as my domain.

There has to be something within WHM and/or CSF blocking SMTP connection within the server itself...

We just found out that another client is having the same issue...same server, same CS-Cart shopping cart script. Beginning to wounder if it the script itself.

However, still looking for some suggestions on what if anything we can do to further investigate this. Meaning, we know the script is not connecting, so is there some other script, command line tool that could be ran to determine if in fact a security setting with WHM and/or CSF is blocking localhost SMTP connections?

Thanks

[Infopro]

Hopefully someone could help track down an issue we are seeing with using SMTP email option inside a shopping cart script called CS-Cart.

What happens if he disables this setting and tries to send an email from that software?

What are these set to in CSF?

SMTP_BLOCK =

SMTP_ALLOWLOCAL =

[Infopro]

You might have more luck here:

SMTP authentication port - where can I define this? - CS-Cart Community Forums

[D-Litz]

What happens if he disables this setting and tries to send an email from that software?

What are these set to in CSF?

SMTP_BLOCK =

SMTP_ALLOWLOCAL =

There is three options total for sending mail within this shooping cart script.

via SMTP server (Does Not Work)
via PHP mail function (Works)
via sendmail function (Works)

SMTP_BLOCK = 1

SMTP_ALLOWLOCAL = 1

[web-project]

There is three options total for sending mail within this shooping cart script.

via SMTP server (Does Not Work)
via PHP mail function (Works)
via sendmail function (Works)

SMTP_BLOCK = 1

SMTP_ALLOWLOCAL = 1

I am getting opposite
via SMTP server (Works)
via PHP mail function (Does Not Work)
via sendmail function (Does Not Work)

the "Prevent the user "nobody" from sending out mail to remote addresses (PHP and CGI scripts generally run as nobody if you are not using PHPSuexec and Suexec respectively.)" option is switched off
and
the "Silently Discard all FormMail-clone requests with a bcc: header in the subject line" is on

Could you point me to right direction?