Let us look at how to set up the aws ec2 sendmail ses. With the support of our Sendmail support services at Bobcares we can give you a complete note on the whole process.

Requirements for aws ec2 sendmail ses setup

If we are sending email from an Amazon EC2 instance, we must additionally fulfill the following steps:

• In order for recipient email providers to accept the email, we may need to assign an Elastic IP Address to the Amazon EC2 instance.
• By default, Amazon Elastic Compute Cloud (Amazon EC2) blocks email traffic on port 25. We can request that these restrictions be lifted in order to avoid timeouts while sending email from Amazon EC2.

Configuring Sendmail for AWS EC2 Sendmail ses Setup

Follow the steps in this section to configure Sendmail to use Amazon SES to send email.

Section one:

• Open the file /etc/mail/authinfo with a text editor. If the file does not already exist, create it by adding the following line to

  /etc/mail/authinfoCopy Code

  .

  AuthInfo:email-smtp.us-west-2.amazonaws.com "U:root" "I:smtpUsername" "P:smtpPassword" "M:PLAIN"Copy Code

  . Make the following modifications:

  a: Substitute

  email-smtp.us-west-2.amazonaws.comCopy Code

  for the Amazon

  SES SMTPCopy Code

  endpoint we want to use.

  b:

  smtpUsernameCopy Code

  should be replaced with the Amazon

  SES SMTPCopy Code

  user name.

  c:

  smtpPasswordCopy Code

  should be replaced with the Amazon

  SES SMTPCopy Code

  password.
• The next step in aws ec2 sendmail ses is to produce the

  /etc/mail/authinfo.dbCopy Code

  file. To do this type the following command at the command prompt:

  sudo sh -c 'makemap hash /etc/mail/authinfo.db < /etc/mail/authinfo'Copy Code
• Type the following command at the command line to enable relaying to the Amazon SES SMTP endpoint.

  sudo sh -c 'echo "Connect:email-smtp.us-west-2.amazonaws.com RELAY" /etc/mail/access'Copy Code

  .

  Replace

  email-smtp.us-west-2.amazonaws.comCopy Code

  with the address of the Amazon

  SES SMTPCopy Code

  endpoint to use in the preceding command.
• To regenerate

  /etc/mail/access.dbCopy Code

  , enter the following command at the command line:

  sudo sh -c 'makemap hash /etc/mail/access.db < /etc/mail/access'Copy Code
• Use the following command to generate backups of the

  sendmail.cfCopy Code

  and

  sendmail.mcCopy Code

  files:

  sudo sh -c 'cp /etc/mail/sendmail.cf /etc/mail/sendmail_cf.backup && cp /etc/mail/sendmail.mc /etc/mail/sendmail_mc.backup'Copy Code
• Add the lines below to the /etc/mail/sendmail.mc file before any

  MAILER()Copy Code

  declarations.

  define(`SMART_HOST', `email-smtp.us-west-2.amazonaws.com')dnl define(`RELAY_MAILER_ARGS', `TCP $h 25')dnl
  define(`confAUTH_MECHANISMS', `LOGIN PLAIN')dnl FEATURE(`authinfo',
  `hash -o /etc/mail/authinfo.db')dnl MASQUERADE_AS(`example.com')dnl FEATURE(masquerade_envelope)dnl FEATURE (masquerade_entire_domain)dnlCopy Code

  Substitute

  email-smtp.us-west-2.amazonaws.comCopy Code

  for the Amazon SES SMTP endpoint we want to use. Substitute

  example.comCopy Code

  with the domain to which we wish to send email. We can save the file after the process.

Section Two

• Type the following command to sendmail.cf writeable at the command line.

  sudo chmod 666 /etc/mail/sendmail.cfCopy Code

  . This completes the first section aws ec2 sendmail ses set up.
• To regenerate sendmail.cf, enter the following command at the command line:

  sudo sh -c 'm4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf'Copy Code

  We may encounter issues such as “Command not found” and “No such file or directory,” so make sure your system has the m4 and sendmail-cf packages installed.
• Use the following command at the command line to change the permissions of sendmail.cf to read-only:

  sudo chmod 644 /etc/mail/sendmail.cfCopy Code
• To restart Sendmail, use the following command at the command prompt.

  sudo /etc/init.d/sendmail restartCopy Code

  . If the above doesn’t work, try the following: If the above doesn’t work, try the following: sudo su service sendmail restart.
• To send a test email, do the following steps. If the porcess is success then we have competed the aws ec2 sendmail ses setup:

  A: Enter the following command at the command line.

  /usr/sbin/sendmail -vf sender@example.comCopy Code

  . From email address should be replaced with sender@example.com. To address should be recipient@example.com. After finishing, hit Enter.

  B: Insert the message content as follows. At the end of each line, press Enter.

  From: sender@example.com To: recipient@example.com Subject: Amazon SES test email This is a test message sent from Amazon SES using Sendmail.Copy Code

  When we’ve finished inputting the email’s content, hit Ctrl+D to send it.
• Look for the email in the recipient’s email client. Check the junk mail folder if we can’t find the email. If we still can’t discover the email, look in the mail server’s Sendmail log. The log is frequently found in /var/log/mail.log or /var/log/maillog.

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Conclusion

To sum up we have now gone through all of the steps to set up the aws ec2 sendmail ses. We have now completed the entire setup procedure with the assistance of our Sendmail support services at Bobcares.