[Gllug] Sendmail

tet at accucard.com tet at accucard.com
Tue Jul 23 09:32:06 UTC 2002


>You need to edit the sendmail.cf file (/etc/sendmail.cf).
>
>Near the top of the file you should find a section like this:
>
># who I masquerade as (null for no masquerading) (see also $=M)
>DM
>
>you need to change the second line to:
>
>DMdomainname

This probably won't work. All it does it rewrite the address that's
visible in the headers. The next hop mail server *should* be rejecting
this as spam (then again, it is Exchange, so who knows what it's doing).
To rpevent that, you need to be masqerading the envelope as well. In your
/etc/mail/sendmail.mc file, add:

	define(`SMART_HOST', `exchangeserver.mydomain.com')dnl
	MASQUERADE_AS(`mydomain.com')dnl
	FEATURE(`masquerade_envelope')dnl

Then run:

	m4 /etc/mail/sendmail.mc > /etc/sendmail.cf
	service sendmail restart

Tet

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