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Operating Systems Linux Red Hat How to setup Sendmail as SMTP Relay? Post 302522232 by adshocker on Friday 13th of May 2011 09:00:31 PM
Old 05-13-2011
How to setup Sendmail as SMTP Relay?

Hi Guys,

I want to setup sendmail using my username and password on my ISP to be able to send out messages.

I'm using Linux. So far, what I've done is modified the sendmail.mc with the following changes:
Code:
define(`SMART_HOST',`myispsmtpoutgoingserver')
FEATURE(authinfo)dnl

In my /etc/mail/authinfo, I have the following:
Code:
AuthInfo:mysmtpoutgoingserver "U:myusername@myispdomain" "I:myusername@myispdomain" "P:mypassword" "M:PLAIN"

Now whenever I try sending by executing a simple sendmail command:
Code:
cat sendmail.mc | sendmail "myotheremail@gmail.com"

I always get a Sender Rejected error mail back.
Code:
(reason: 550 5.1.8 <root@mylocaldomain>: Sender address rejected: Domain not found)

This is actually true as the mylocaldomain is not a public Internet domain. Just a localdomain for our local network. However, I was expecting that to change to the username in my authinfo "myusername@myispdomain" since this account is authorized to send out email with my ISP.

Any ideas on how I can do this?

Thanks.

Last edited by adshocker; 05-15-2011 at 08:45 PM..
 

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mailq(1)						      General Commands Manual							  mailq(1)

NAME
mailq - Displays the contents of the mail queue SYNOPSIS
mailq [-v] DESCRIPTION
The mailq command displays a list of messages in the mail queue. The mailq command is the same as the sendmail command with the -bp option; see sendmail for more information. EXAMPLES
The mailq command lists the mail queue as shown in the following example: Mail Queue (1 request) --QID--- -Size- ---Q- Time------- --Sender/Recipient--- AA002508 3 Thu Dec 17 10:01 root The mailq -v command lists the mail queue as shown in the following example: Mail Queue (1 request) --QID--- -Size- -Priority- ---Q-Time---- -Sender/Recipient- AA002508 3 1005 Dec 17 10:01 root (Output might be formatted differently on your system.) The fields have the following meaning: Contains the message queue ID of the message. Contains the number of bytes in the body of the message (header information not included). Contains the priority of the message. Contains the date that the message entered the queue. Contains the user ID of the sender (first), and then the user ID of the receiver of the message. In this example, a message also indicates the status of the message. FILES
Contains the log file and temporary files associated with the messages in the mail queue. SEE ALSO
Commands: sendmail(8) mailq(1)
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