Sendmail or SMTP

trungmv · 04-18-2012, 06:41 AM

Hi everyone,

I have an application that can use send email via Php function or Sendmail or SMTP:
http://nl1.upanh.com/b5.s13.d5/ab50f...09341.mail.jpg
I also have an email account that authenticated.
Now, i want to use that account to send out email from my linux box.
Which one may i choose Sendmail or SMTP to install to send email?
My server is CentOS 5.7
But i did not own the server mail.
Any help me to how to configure??
Any feedback is appreciate.

Regards,

chrism01 · 04-18-2012, 06:33 PM

On v5 RHEL/Centos, sendmail is the default smtp server.
You can use the ps cmd to see if its running

Code:

ps -ef|grep sendmail

trungmv · 04-18-2012, 08:30 PM

Hi Chris,

I know sendmail is default on my box.
But i do not know how to configure the sendmail that using the account which i already have to send mail from my application.

Regards,

Satyaveer Arya · 04-19-2012, 03:58 AM

Just type on google, how to configure sendmail in CentOS 5.7, you'll get many links, take help from there to configure sendmail.

linuxlover.chaitanya · 04-19-2012, 04:36 AM

When you say you have an account, what do you mean? What account? Where is the account? On some third party service? Local system account?

chrism01 · 04-19-2012, 07:52 PM

In your original post asked about sendmail OR SMTP; SMTP is just the protocol, sendmail is an email server daemon/service.

Anyway, we need more detail as requested above.
We need to know if you ARE using sendmail or something else eg postfix, qmail etc

If you are using sendmail, this will give useful cfg info

Code:

sendmail -d0  < /dev/null

(that's a zero btw)

Here's a simple test email

Code:

(uname -n)|mailx -s "Test email" you@your_email.com

substitute your details there

trungmv · 04-20-2012, 03:44 AM

Hi all,

My email account is an email account on exchange server(i did not own this server).
As i said i have a application:http://nl1.upanh.com/b5.s13.d5/ab50f...09341.mail.jpg
If i choose send email by PhP Mail() Function is ok
but send by sendmai or SMTP not ok.

Code:

[root@machine ~]# sendmail -d0.1 -bv
Version 8.13.8
 Compiled with: DNSMAP HESIOD HES_GETMAILHOST LDAPMAP LOG MAP_REGEX
                MATCHGECOS MILTER MIME7TO8 MIME8TO7 NAMED_BIND NETINET NETINET6
                NETUNIX NEWDB NIS PIPELINING SASLv2 SCANF SOCKETMAP STARTTLS
                TCPWRAPPERS USERDB USE_LDAP_INIT

============ SYSTEM IDENTITY (after readcf) ============
      (short domain name) $w = machine
  (canonical domain name) $j = machine.domain
         (subdomain name) $m = Domain
              (node name) $k = machine.domain
========================================================

when i try:

Code:

(uname -n)|mailx -s "Test email" you@your_email.com

already received Test email.

Regards,

linuxlover.chaitanya · 04-20-2012, 05:48 AM

If you use SMTP, you will need to provide the information needed. Does your exchange support SMTP authentication? Is it configured for SMTP authentication? If yes, then have you configured your application with proper needed SMTP settings? It will most probably need the hostname or IP address of SMTP server, user name and password for authentication. If authentication mechanism uses SSL or TLS, your application should also support this.
As for with sendmail, you will need path to sendmail server and user name and password if it is configured for authentication.

trungmv · 04-21-2012, 03:50 AM

Hi,

So, exactly now i am using Cacti to monitor our system.

When i choose Sendmail type, and has issue:
http://nl0.upanh.com/b1.s13.d5/f906c...0.sendmail.jpg
http://nl2.upanh.com/b2.s26.d1/61511....sendmail1.jpg

When i choose SMTP type:
http://nl0.upanh.com/b6.s26.d1/24a2b...8210.smtp1.jpg
http://nl1.upanh.com/b6.s13.d5/2fe08...28211.smtp.jpg

Who using Cacti can help me this?
Any feedback is appreciate

Best regards,

linuxlover.chaitanya · 04-22-2012, 04:10 AM

When you are using SMTP, it clearly says that your SMTP server does not support authentication. Hence, you do not need to supply user name and password in the credentials section. Just fill in the host name or the IP address of the SMTP server.
In the first case, sendmail, it says it needs recipient address. This could mean that your sendmail is either not configured properly and hence not accepting the address supplied by you or you actually forgot to tell sendmail whom do you want to send mail to.
Check your both settings and try to send the mail. And if you want to use sendmail method, you could use mail command to check if sendmail is working properly.

trungmv · 04-22-2012, 09:38 PM

Hi chaitanya,

Within this case, how to configure sendmail to sen email with my account?
Could you help me how to do?
I am new in sendmail.
Any reply is appreciated

Best regards,

linuxlover.chaitanya · 04-22-2012, 10:40 PM

The best bet would be to use SMTP option and remove the credentials. If you want to use sendmail, I am not sure how would you do that. I guess you would have to configure sendmail to relay your mails through exchange. But that would be an extra step when you can directly use your exchange server as SMTP without any credentials.

trungmv · 04-23-2012, 03:05 AM

Hi chaitanya,

Thank you your reply as SAP
I tried SMTP type, so have message:
http://nl4.upanh.com/b6.s13.d5/bfc8d...3874.snmp1.jpg
http://nl5.upanh.com/b4.s26.d2/187e3...3875.snmp2.jpg
Meaning the account is wrong?
what is mean authenticate fail???
and also, i can not received email from threshold if breach.
Any help is appreciated,

Best regards,

linuxlover.chaitanya · 04-23-2012, 03:56 AM

As far as I can see, it says that it was able to send the message successfully. It does not mean authentication failure or anything.

trungmv · 04-23-2012, 04:08 AM

Hmm...
Hard to configuration.
If i using the PhP Mail() Function, can already received email with difference domain such as gmail, yahoo mail
But with our domain (abc.com) i can not received email.

Code:

q3N8jEPs024087: to=<def@abc.com>, ctladdr=<user@machine.domain> (502/502), delay=00:00:11, xdelay=00:00:02, mailer=esmtp, pri=214885, relay=mail.domain. [IP address's Email server], dsn=2.0.0, stat=Sent (Message accepted for delivery)

With above message, could you help me??

Regards,