Sendmail Name Lookup Issue

Hi,

We are using Solaris 10 as sendmail gateway. We have just migrated our DNS recently. Now when a mail is sent, the system returned the following message:

# cat /etc/hosts | mailx -v <name>@<domain name>
<domain name>: Name server timeout
<name>@<domain name>... Transient parse error -- message queued for future delivery
<name>@<domain name>... queued

# mailq
/var/spool/mqueue is empty
Total requests: 0

I tried to stop/start sendmail but no luck to solve the problem.

Any pointer is appreciated. Thanks in advance.

Hi all,

I am trying to configure sendmail on my OEL 6.5 running on VM.

I did below to set it :

1. # yum install m4 telnet mailx
2. # yum install sendmail sendmail-cf
3. # ps -ef | grep -v grep | grep -i sendmail
root 3805 1 0 05:58 ? 00:00:00 sendmail: accepting connections
smmsp 3815 1 0 05:58 ? 00:00:00 sendmail: Queue runner@01:00:00 for /var/spool/clientmqueue

4. # netstat -an | grep :25 | grep tcp
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN

5. vi /etc/mail/sendmail.mc

From:
DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl

To
dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl

6. # m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf

7. # service sendmail restart

8. # vi /etc/mail/local-host-names
oracle.com

Now if I am sending mail from 1 user (root) to other user (oracle)

$ mail -s "Test mail from root" oracle
Hello this is the test mail
.
EOT

and checking mail log under /var/mail/oracle, its passing successfully.

But when trying to send the same from root user to my company outlook account not gtting any mail.

mail -s "Test mail from root" abc.xyz@aaaa.com (trying to send to my outlook account)

Getting below error on /var/log/maillog :

May 13 10:47:47 mydb sendmail[6306]: t4DEllUD006306: from=oracle, size=244, class=0, nrcpts=1, msgid=<201505131447.t4DEllUD006306@mydb.oracle.com>, relay=root@localhost
May 13 10:47:47 mydb sendmail[6307]: t4DEllxo006307: from=<oracle@mydb.oracle.com>, size=506, class=0, nrcpts=1, msgid=<201505131447.t4DEllUD006306@mydb.oracle.com>, proto=ESMTP, daemon=MTA, relay=localhost [127.0.0.1]
May 13 10:47:47 mydb sendmail[6306]: t4DEllUD006306: to=abc.xyz@aaaa.com, ctladdr=oracle (600/601), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30244, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (t4DEllxo006307 Message accepted for delivery)
May 13 10:47:49 mydb sendmail[6309]: STARTTLS=client, relay=mail1.nic.aaaa.com., version=TLSv1/SSLv3, verify=FAIL, cipher=AES256-SHA, bits=256/256
May 13 10:47:50 mydb sendmail[6309]: t4DEllxo006307: to=<abc.xyz@aaaa.com>, ctladdr=<oracle@mydb.oracle.com> (600/601), delay=00:00:03, xdelay=00:00:03, mailer=esmtp, pri=120506, relay=mail1.nic.aaaa.com. [192.240.6.6], dsn=2.0.0, stat=Sent (1uc8dar1s7-1 Message accepted for delivery)

Please suggest if something I missed out or any other problem

Thanks,

Hi,

We have a sendmail gateway supported by Solaris 10.

Not sure when this had happened that mails are clogged in the queue and never send out. I have to run "sendmail -OTimeout.hoststatus=0m -q -v" manually to flush the queues.

Note that some mails are not able to deliver even I ran the command (sendmail -OTimeout.hoststatus=0m -q -v).

Any advise is appreciated. Thanks in advance.

I'm new to Sendmail and I want to be able to grab various stats from the Linux servers that I manage to monitor them.

Sendmail is running on my main Linux server and I can go thru the motions of sending an email to my MS Outlook client, which is what I use at work.

However I never get the email and if I check /var/spool/mqueue, I don't see any email queued up, and if I put a tail -f on /var/log/mail, this is what I'm seeing:

Code:

Feb  3 10:20:38 computername sendmail[31432]: t13GKcri031432: from=cmmiller, size=77, class=0, nrcpts=1, msgid=<201502031620.t13GKcri031432@mailserver.com>, relay=cmmiller@localhost
Feb  3 10:20:39 computername sendmail[31433]: t13GKcVO031433: from=<cmmiller@mailserver.com>, size=425, class=0, nrcpts=1, msgid=<201502031620.t13GKcri031432@mailsever.com>, proto=ESMTP, daemon=MTA, relay=localhost.localdomain [127.0.0.1]
Feb  3 10:20:39 computername sendmail[31432]: t13GKcri031432: to=myemailaddress@com, ctladdr=cmmiller (602/602), delay=00:00:01, xdelay=00:00:01, mailer=relay, pri=30077, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (t13GKcVO031433 Message accepted for delivery)
Feb  3 10:20:39 computername sendmail[31435]: t13GKcVO031433: to=<myemailaddress@com>, ctladdr=<cmmiller@mailserver.com> (602/602), delay=00:00:00, xdelay=00:00:00, mailer=smtp, pri=120425, relay=smtp.server. [192.138.40.216], dsn=2.0.0, stat=Sent (+OK message queued for delivery.)

Not sure what to troubleshoot here, and if anyone can point me to better information, thanks.

Hi,

We have a sendmail gateway supported by Solaris 10 server. How to go about if we would like to migrate the sendmail gateway to another Solaris 10 server?

Thanks in advance.

I searched the forums for my title and I am not finding exactly what I am looking for. I am not using a program to send mail, such as Thunderbird or whatever. I simply want to be able to send mail from my Ubuntu 14.04 DESKTOP version for logging. I use a program called Logwatch (used alot in RHEL or CentOS) to monitor the server itself. The program sends mail to the root user account on the machine, which I can check and see, and within the program conf file, I can add an external email address, but it never sends.

I'm familiar with the SMTP concept of sending mail, outgoing mail server authentication, etc. I don't care to run this box as an SMTP server, but I understand that I need some sort of SMTP or MTA program to send mail into the real world. I tried Postfix but couldn't get that to work, and the Logwatch program wants to use sendmail, so I installed that but I am having the same issue. I am sure it is a step I am missing.

I also can't figure out how to get the 'mail' cmd from Terminal to work. I use this command:
Code:

mail -s "test" | /usr/sbin/mail myemail@domain.com

it follows through the subject, CC, body, but when I try to hit either . or CTRL-D, it never sends the email, in fact is does nothing.

I also tried sendmail with this command:
Code:

sendmail -v my@email.com < /dev/null

I was just trying to send a test email. It logs into my SMTP mail server, which I already configured, and it tells me to type out the mail, then end with a "." by itself on a single line. I try this and it just sits there.

I am missing SOMETHING when trying to actually send the mail. I can get it written with subject and body, connected, but it never sends and I am probably missing a / or something.

I did find and follow these instructions, but it still isn't working with sendmail. If I need to go back to Postfix, I can do that, I don't honestly care what I use, I just want some programs such as Logwatch to be able to email me.
http://stackoverflow.com/questions/1...mail-on-ubuntu

I'm trying to send all root's mails to an external e-mailaddress, but for some reason I can't get it to work.

I've edited /etc/aliases with the following rule:

root: <myexternal@email.address>

and run newaliasses after, which would run without any errors.

I can run: echo "Testing" | mail -s "Server Testing" <myexternal@email.address>
just fine without any issue and it's being delivered correctly to my external address.

But when I run: echo "Testing" | mail -s "Server Testing" root

I (first) get a "Deferred: 451 Temporary local problem - please try again later" error and when I then run: "Sendmail -OTimeout.hoststatus=0m -q -v" to flush the mailqueue it says everything is ok, but I then get a message saying I have new mail in /var/spool/mail/root and I don't get the mail on my external e-mailaddress.

I have no clue where to look next, hopefully you guys can point me in the right direction.

Just for completeness: I use mageia release 4 (x86_x64).

Hi,

I am required to configure sendmail to be able to send emails to only two domains. Can some one help me with this. Thank you.

I need to send mails from our centos server, what are tools required ?

server
CentOS release 6.5 (Final)

How to check if sendmail is installed and configured?

I even tried mutt, I could install but not able to send mails. Is there any configuration required ?

I have setup postfix in Oracle Linux VM in virtualbox to test simple email sends that I am sending it to my personal email.

I have configured the following in main.cf file

myhostname = abc.testserver.org
myorigin = $myhostname
inet_interfaces = localhost
#relayhost = localhost.localdomain - I have this commented as of now, but I tried with the localhost.localdomain, IP address and none worked. I also do not have my ISP's server details and I also do not want to use it.

I checked the /var/log/maillog and I see the following

Code:

May  4 17:25:37 oim sendmail[31684]: t44LPbKA031684: from=root, size=72, class=0, nrcpts=1, msgid=<201505042125.t44LPbKA031684@localhost.localdomain>, relay=root@localhost
May  4 17:25:37 oim sendmail[31685]: t44LPbSn031685: from=<root@localhost.localdomain>, size=378, class=0, nrcpts=1, msgid=<201505042125.t44LPbKA031684@localhost.localdomain>, proto=ESMTP, daemon=MTA, relay=localhost.localdomain [127.0.0.1]
May  4 17:25:37 oim sendmail[31684]: t44LPbKA031684: to=abc@abc.com, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30072, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (t44LPbSn031685 Message accepted for delivery)

I can also see the messages in /var/spool/mqueue/. The telnet to the localhost 25 port also works. Is any of the config settings wrong?

Thanks.