Alexander Volovics wrote:
As I have been using postfix a long time I have forgotten
the little I knew about sendmail.
But I thought it would have been configured by default to allow
the mail from (ana)cron to work without problems and complaints.
On a laptop on which I have been trying out F8 test3 I decided to
not use my standard postfix/mutt/fetchmail/procmail setup but make
do with claws-mail instead.
So I just left sendmail (not needing it) with the default install
configuration.
To my surprise I see constant error messages when getting mail from
Mail Delivery Subsystem <MAILER-DAEMON@xxxxxxxxxxxxxxxxxxxxx>
Namely:
- Tried to mail output of jon 'cron daily', but mailer proces
(usr/bin/sendmail) exited with status 65
- The following addresses had permanent fatal errors -----
root
(reason: 553 5.5.4 <root@xxxxxxxxxxxxxxxxxxxxx>... Real domain name
required for sender address) (expanded from: root)
- relay localhost (127.0.0.1) may be forged
Eventually I do get the mail in /var/spool/mail/user and claws-mail
picks it up (again with a summary of the errors).
Wouldn't it be neater to configure sendmail to perform these simple
duties without these hiccups.
I expect that if /etc/aliases is not changed to deliver root's mail to
user the user might never get any cron mail and newbies might be
confused on seeing possible error messages when mail is delivered
to root.
A further irritation occurs when using 'mail' to send messages from
user to user. The do not arrive at /var/spool/mail/user but are dropped
as "dead.letter" in the users home directory
Sendmail is an internet mailer and comes configured to follow internet
rules. It is infinitely configurable, though, so if you want it to do
something else you probably can.
Is this mentioned somewhere. It should be.
Read through the comments in /etc/mail/sendmail.mc. That's a small
subset of what you can change, but it's probably enough. After making a
change there, do a 'service sendmail restart' to rebuild sendmail.cf and
pick up the changes.
--
Les Mikesell
lesmikesell@xxxxxxxxx
