topic Re: sendmail to mailserver in General Topics

sendmail to mailserver

ED — Mon, 25 Jun 2018 11:26:49 GMT

Hi,

Trying to test mail from sendmail to mailserver. Syntax used is

./sendmail -s 'SmartView' -t MAILSERVER -f SENDER_EMAIL_ADDRESS RECEIVER_EMAIL_ADDRESS

I have used fwmonitor to capture output and opened it in Wireshark. It goes like this:

220 answer from mailserver

HELO mgmt.mydomain.com

250 reply from mailserver

And then it stops. The next thing should be something like this from sendmail

MAIL FROM: me@mydomain.com but it never happens.

Anyone knows why and if there is something wrong with the syntax used?

Re: sendmail to mailserver

Niels_van_Sluis — Mon, 25 Jun 2018 11:54:32 GMT

On security gateways I have used the following command in the past:

echo -e "Subject: Mail test\r\n\r\nTest.\r\n" | sendmail --domain=example.com -f no-reply@example.com -v user@example.com --host=<ipaddress_of_mta>

Re: sendmail to mailserver

ED — Mon, 25 Jun 2018 12:03:31 GMT

Thank you Niels but this is sendmail from a management server r80.10 and it looks like it doesn't support the parameters you are using:

Re: sendmail to mailserver

Niels_van_Sluis — Mon, 25 Jun 2018 12:10:06 GMT

On a R77.30 gateway there seems to be at least two versions of sendmail:

/usr/sbin/sendmail
$FWDIR/bin/sendmail

The one I was using is /usr/sbin/sendmail.

Re: sendmail to mailserver

ED — Mon, 25 Jun 2018 12:16:38 GMT

You are correct, there are two. The one I was trying was $FWDIR/bin/sendmail since I'm trying to run a mail alert script and are supposed to use internal_sendmail. I hope someome can confirm that internal_sendmail is $FWDIR/bin/sendmail

Re: sendmail to mailserver

Niels_van_Sluis — Mon, 25 Jun 2018 12:18:52 GMT

The other one should work like this:

echo "Test" | $FWDIR/bin/sendmail -s 'SmartView' -t MAILSERVER -f SENDER_EMAIL_ADDRESS RECEIVER_EMAIL_ADDRESS

Re: sendmail to mailserver

ED — Mon, 25 Jun 2018 12:45:15 GMT

When using echo I could send send mail.

Solution to my problem was to use $FWDIR/bin/sendmail -s 'SmartView' -t MAILSERVER -f SENDER_EMAIL_ADDRESS RECEIVER_EMAIL_ADDRESS

instead of

internal_sendmail -s 'SmartView' -t MAILSERVER -f SENDER_EMAIL_ADDRESS RECEIVER_EMAIL_ADDRESS

in the Global properties configuration.

Re: sendmail to mailserver

Ankit1990 — Tue, 15 Sep 2020 11:02:23 GMT

HI ,

Can you please help me how can I send an attachment over same email.

I have scheduled MDS backup and want to send a report when it is completed with logs files attached.

I am using below script to send email and using R80.30 OS

echo -e "Subject: Mail test\r\n\r\nTest.\r\n" | sendmail --domain=abc.com -f server@abc.com -v Receipient@abc.com --host=smtp.abc.com

Re: sendmail to mailserver

dlusk — Mon, 05 Oct 2020 15:25:35 GMT

Unfortunately, the sendmail client on the Check Point devices has been slimmed down and cannot have attachments. I ran into the same problem and this is something my SE told me.

Re: sendmail to mailserver

Mantecoso — Tue, 02 May 2023 17:59:07 GMT

Python Script if you have to attach a file

___________

#! /usr/bin/python
import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.base import MIMEBase
from email import encoders

import argparse

parser = argparse.ArgumentParser(description="Send emails with attached files",
formatter_class=argparse.ArgumentDefaultsHelpFormatter,argument_default=argparse.SUPPRESS)
parser.add_argument("-s", "--smtp", help="Mailrelay IP",required=True)
parser.add_argument("-r", "--fromm", help="from",required=True)
parser.add_argument("-d", "--to", help="to",required=True)
parser.add_argument("-t", "--Subject", help="Subject",required=True)
parser.add_argument("-x", "--file", help="file to attacha",required=True)
args = parser.parse_args()

sender_email = args.fromm
receiver_email = args.to

message = MIMEMultipart()

message["From"] = args.fromm
message['To'] = args.to
message['Subject'] = args.Subject

file = args.file
attachment = open(file,'rb')

obj = MIMEBase('application','octet-stream')

obj.set_payload((attachment).read())
encoders.encode_base64(obj)
obj.add_header('Content-Disposition',"attachment; filename= "+file)

message.attach(obj)
my_message = message.as_string()

email_session = smtplib.SMTP(args.smtp,25)
email_session.starttls()

email_session.sendmail(sender_email,receiver_email,my_message)
email_session.quit()

___________

chmod +x mail.py

./mail.py -s x.x.x.x -r test@test.com -d elpana@siva.com -t "test email " -x file.csv