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Full Discussion: Sendmail - issue within DMZ for some servers but not all
Top Forums UNIX for Beginners Questions & Answers Sendmail - issue within DMZ for some servers but not all Post 303033262 by dakelly on Tuesday 2nd of April 2019 10:42:04 AM
Old 04-02-2019
Sorry I am out the office for a while..... so not in the office to check this out.

I done this:
Code:
/etc/init.d/sendmail stop
cp sendmail.mc hostname.mc
cp sendmail.cf sendmail.cf.25Mar2019
.... amended hostname.mc
m4 hostname.mc > hostname.cf
cp -p hostname.cf sendmail.cf
/etc/init.d/sendmail start

but I made 2 new servers from ubuntu 18.04 and they worked fine - send emails fine
but the ones that updated from 16.04 to 18.04 don't send... not sure if it is something to do with how networking is set up on 18.04 and 16.04 as the are different.
18.04 uses a yaml file and the 16.04 does not....
 

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LEARN ABOUT DEBIAN

sendmailconfig

SENDMAILCONFIG(8)					      System Manager's Manual						 SENDMAILCONFIG(8)

NAME

       sendmailconfig - configure sendmail for Debian systems

SYNOPSIS

       sendmailconfig [--no-reload]

DESCRIPTION

       sendmailconfig is used to simplify the configuration of sendmail(8) for use on Debian systems.

       In  the	simplest  case,  you  may  run	this program to (re)configure sendmail for your Debian system at any time. It will modify the file
       /etc/mail/sendmail.mc in order to create a working sendmail configuration which will be written to the file /etc/mail/sendmail.cf.

       For advanced configurations, you can modify the sendmail.mc file before generating sendmail.cf. Future invokations of  sendmailconfig  will
       preserve these changes provided they are made at the end of the file.

       Normally  sendmailconfig  will  ask  if	you want to reload sendmail after making changes to its configuration. The --no-reload option will
       avoid this question.

FILES

       /etc/mail/sendmail.mc
	      sendmail m4 input to generate sendmail.cf

       /etc/mail/sendmail.cf
	      actual sendmail configuration file

       /etc/mail/sendmail.cw
	      names for which we will accept mail in the standard configuration

       /etc/mail/sendmail.ct
	      names of trusted users in the standard configuration

SEE ALSO

       sendmail(8)

AUTHOR

       Robert Leslie <rob@mars.org>

								    21-Jan-1997 						 SENDMAILCONFIG(8)
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