Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Debugging a "sendmail" issue
Operating Systems AIX Debugging a "sendmail" issue Post 302345764 by neil_is_ere on Thursday 20th of August 2009 06:27:37 PM
Old 08-20-2009
Quote:
Originally Posted by tristezo2k
Do sendmail tries to *send* it? You should be able to check that on the /var/log/mail* (last resort tcpdump -i if -n port 25 on the server or the equivalent snoop)
Quote:
Originally Posted by EarleAke
You should also be able to look at the sendmail logs '/var/log/maillog' to see what is going on with the jimbob.com emails. See if they were sent on or if they are still sitting on your host waiting to be delivered.
It doesn't appear there is any log file for sendmail, I have checked the sendmail.cf and it doesn't appear there either. I'm wondering if I can possibly produce a log file on the fly which does the same thing?

I noticed the flag -X in the man pages:
-X LogFile Logs all traffic in and out of sendmail in LogFile for debugging
mailer problems. Use this flag sparingly, since it produces a lot of data very
quickly. This flag applies only to 4.2 or later.
However I'm not sure how to use it, when I try excuting:
$ sendmail -X blah.dat
Cannot chdir(/var/spool/mqueue): The file access permissions do not allow the specified action.
Not sure if there is anything better available either.

Quote:
Originally Posted by tristezo2k
How did you ping it? ping jimbob.com ? It might not be the correct ip.
When an MTA tries to send an email, it asks for the MX dns record.
It usually points to smtp||mail.domain.tld, but could be any other name/address

<snip>

So, the server is able to communicate with the domain.tld MX
Quote:
Originally Posted by EarleAke
Once you find out who the mail exchanger is, you could try to telnet to port 25 of that host which is the SMTP port and see if it responds.
I followed your steps, but it hanged:
Trying...
telnet: connect: A remote host did not respond within the timeout period.
What I did.... I obtained the MX record and used the mail server it listed. Tested for not just jimbob.com, but also gmail.com, hotmail.com and yahoo.com - they all hanged. So I'm guessing it is a security restriction blocking the telnet session for external sites.

---------- Post updated at 05:27 PM ---------- Previous update was at 06:23 AM ----------

Apologies for bringing this back into light, but has anyone else got any more ideas? Kinda struggling to find a resolution to this one.

I will get the mail log working tomorrow, but there doesn't seem an awful lot of information going into it.

Unfortunately I can't test the connection by telneting to the mail server (as stated above), must be getting blocked when attempting to telnet into the external site.

Helpful replies so far though, but need moooOOORRRE! :-)
Last edited by neil_is_ere; 08-20-2009 at 08:28 AM..
 

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Explain the line "mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`"

Hi Friends, Can any of you explain me about the below line of code? mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'` Im not able to understand, what exactly it is doing :confused: Any help would be useful for me. Lokesha (4 Replies)
Discussion started by: Lokesha
4 Replies

2. Solaris

sendmail "root... User address required." error

I'm running sendmail (8.13.8+Sun/8.13.8/Submit) solaris 10. When I send mail to root at the command line (whether I use a full-qualified address or just root), I get the error message root... User address required. Sending mail to root (either at the command line or in a cron job),... (10 Replies)
Discussion started by: csgonan
10 Replies

3. Shell Programming and Scripting

awk command to replace ";" with "|" and ""|" at diferent places in line of file

Hi, I have line in input file as below: 3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL My expected output for line in the file must be : "1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL" Can someone... (7 Replies)
Discussion started by: shis100
7 Replies

4. UNIX for Advanced & Expert Users

Sendmail: how to restrict delivery based on "to" or "from"?

Hello, I manage a large sendmail server that handles more than 20,000 pieces of mail per day. It's a bit unusual in that all this mail is only being sent to and from 4 local accounts. (It's an automated transaction processing system, whereby users submit a transaction via email attachment). ... (2 Replies)
Discussion started by: lupin..the..3rd
2 Replies

5. Shell Programming and Scripting

""Help Me!""Beginner awk learning issue

Hi All, I have just now started learning awk from the source - Awk - A Tutorial and Introduction - by Bruce Barnett and the bad part is that I am stuck on the very first example for running the awk script. The script is as - #!/bin/sh # Linux users have to change $8 to $9 awk ' BEGIN ... (6 Replies)
Discussion started by: csrohit
6 Replies

6. Solaris

The slices "usr", "opt", "tmp" disappeared!!! Help please.

The system don't boot. on the screen appears following: press enter to maintenance (or type CTRL-D to continue)...I checked with format command. ... the slices "0-root","1-swap","2-backup" exist. ...the slises "3-var","6-usr" -unassigned. :( (16 Replies)
Discussion started by: wolfgang
16 Replies

7. UNIX for Dummies Questions & Answers

Using "mailx" command to read "to" and "cc" email addreses from input file

How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing “To” e-mail address and column 3 contains “cc” e-mail address to include with same email. Sample input file, email.txt Below is an sample code where... (2 Replies)
Discussion started by: asjaiswal
2 Replies

8. Shell Programming and Scripting

Bash script - Print an ascii file using specific font "Latin Modern Mono 12" "regular" "9"

Hello. System : opensuse leap 42.3 I have a bash script that build a text file. I would like the last command doing : print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt where : print_cmd ::= some printing... (1 Reply)
Discussion started by: jcdole
1 Replies

9. AIX

Apache 2.4 directory cannot display "Last modified" "Size" "Description"

Hi 2 all, i have had AIX 7.2 :/# /usr/IBMAHS/bin/apachectl -v Server version: Apache/2.4.12 (Unix) Server built: May 25 2015 04:58:27 :/#:/# /usr/IBMAHS/bin/apachectl -M Loaded Modules: core_module (static) so_module (static) http_module (static) mpm_worker_module (static) ... (3 Replies)
Discussion started by: penchev
3 Replies
All times are GMT -4. The time now is 07:22 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy