Sendmail Environment Setup at Innodata

Contents

Sendmail Document'

Client Name: Innodata

By: Heera Singh Koranga

Overview of mail flow in Innodata environment

Sendmail is working as MX for the more than 7 domains. Total number of Sendmail server is 6 as below

NWJDNS30 => nwjdns30.innodata-isogen.com

NWJDNS40 => nwjdns40.innodata-isogen.com

MNLDNS30 => mnldns30.innodata-isogen.com

MNLDNS40 => mnldns40.innodata-isogen.com

NDADNS30 => ndadns30.innodata-isogen.com

NDADNS40 => ndadns40.innodata-isogen.com

Overview of Sendmail configuration according to Innodata environment

Sendmail accepts mails for the incoming domains and forward to Trend Micro server for spam checking, after scanning IMSS server forward all mails to Exchange server where the user's mail box exists.

Some user’s mailbox exists on the Google Apps. Still migration form MS Exchange to Google Apps is under processing.

Allow/Block Mail Relaying in Sendmail:

Open ”/etc/mail/access” file and allow or reject the domains, configuration below:

After making new entry in “/etc/mail/access” file, execute below command:

# makemap hash /etc/mail/access.db < /etc/mail/access

Mail Routing from Sendmail to Trend Micro Server

Route the all incoming mails from Sendmail to Trend Micro Server, configuration below:

After making new entry in “/etc/mail/mailertable” file, execute below command:

# makemap hash /etc/mail/mailertable.db < /etc/mail/mailertable

At the end restart the Sendmail service to load with new entries.