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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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mailstats(8)						      System Manager's Manual						      mailstats(8)

NAME
mailstats - Displays statistics about mail traffic SYNOPSIS
mailstats [-o] [-C cffile [-f stfile] FLAGS
Do not display the name of the mailer in the output. Use cffile as the name of the sendmail "cf" file instead of /var/adm/sendmail/send- mail.cf. Use stfile as the input statistics file instead of /var/adm/sendmail/sendmail.st. DESCRIPTION
The mailstats command reads the information in the /var/adm/sendmail/sendmail.st file (or in the file specified with the -f flag), formats it, and writes it to standard output. Note also that you can change the location of the sendmail.st file by editing its pathname in the sendmail.cf file. EXAMPLES
The format of the information is shown in the following example, in which the first field (M) contains a number that indicates the position of that mailer in the sendmail.cf file, starting at 0 (zero). For example, the first mailer in the sendmail.cf file corresponds to the number 0 in the mailstats display, the second mailer corresponds to the number 1, and so on. Statistics from Thu Feb 17 11:20:01 2000 M msgsfr bytes_from msgsto bytes_to msgsrej msgsdis Mailer 1 50 77K 1 3K 0 0 local 6 43 59K 58 99K 0 0 smtp ============================================================ T 93 136K 59 102K 0 0 The fields in the report have the following meanings: Indicates the position of the mailer in the sendmail.cf file. Indicates the number of messages received by the local machine from the indicated mailer. Indicates the number of bytes in the messages received by the local machine from the indicated mailer. Indicates the number of messages sent from the local machine using the indicated mailer. Indicates the number of bytes in the messages sent from the local machine using the indicated mailer. Indicates the number of rejected messages. Indicates the number of discarded messages. Indicates the name of the mailer. If sendmail transmits mail directly to a file, such as the dead.letter file or an alias target, the message and byte counts are credited to the prog mailer, as defined in the sendmail.cf file. However, mailstats will still default to var/adm/sendmail/sendmail.st. FILES
Specifies the command path Contains system statistics Contains configuration information for sendmail RELATED INFORMATION
Commands: sendmail(8) delim off mailstats(8)
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