topic Re: Sendmail need to block incoming mails in Operating System - HP-UX

Sendmail need to block incoming mails

Ganesan R — Tue, 21 Aug 2007 05:43:15 GMT

Hi Freinds,

I need to block incoming mail for a particular user where that user can send only outgoing mails. We are using sendmail 8.9.3 with PHNE_35950. The steps I performed are below.
1.Using /usr/newconfig/etc/mail/cf/cf/gen_cf script, created new sendmail.cf.gen file and copied to /etc/mail/sendmail.cf to enable
the blocklist recipients feature.

2. Then I create the /etc/mail/access file manually and put the below entry.
# more /etc/mail/access
test@abc.com REJECT

3.Then I created database map using the below command
#makemap dbm /etc/mail/access < /etc/mail/access

4.Restarted the sendmail daemon.

But still the user "test" is receiving mail if i send test mail from root user.

# mailx test@abc.com
Subject: test mail
test mail
.
EOT
#

Your valuable advice pls..

Re: Sendmail need to block incoming mails

Robert-Jan Goossens — Tue, 21 Aug 2007 05:50:01 GMT

---
But still the user "test" is receiving mail if i send test mail from root user.

test@abc.com REJECT <--- external address
---
Thats internal mail, try to send a mail from an other server (external).

Re: Sendmail need to block incoming mails

Ganesan R — Tue, 21 Aug 2007 05:55:33 GMT

Hi Robert,

Thanks for your response.

I want to reject both internal as well as external mails.

Re: Sendmail need to block incoming mails

Steven E. Protter — Tue, 21 Aug 2007 06:06:37 GMT

Shalom,

check the /var/adm/mail.log file and see if the traffic is even passing through the server in question.

It could be relayed through an smtp gateway elsewhere on the network.

Your configuration steps to date are correct. You could in addition try to block the traffic by hostname, if the user has a specific hostname.

SEP

Re: Sendmail need to block incoming mails

Ganesan R — Tue, 21 Aug 2007 06:22:47 GMT

Hi SEP,

This is the entry from /var/adm/syslog/mail.log

Aug 21 06:15:52 il06depo sendmail[15787]: GAA15787: from=root, size=162, class=0 , pri=30162, nrcpts=1, msgid=<200708211115.GAA15787@il06depo.corp.mot.com>, rela y=root@localhost
Aug 21 06:15:52 il06depo sendmail[15789]: GAA15787: to=test@il06depo.corp.mot.co m, ctladdr=root (0/3), delay=00:00:00, xdelay=00:00:00, mailer=local, stat=Sent

Here the host name is il06depo.corp.mot.com instead of abc.com

Re: Sendmail need to block incoming mails

Philip Gunter — Tue, 21 Aug 2007 19:59:11 GMT

Hi Ganesan,

the issue is likely to be your access file.

# more /etc/mail/access
test@abc.com REJECT
^^^

You need to use tabs to separate the fields.

You also should use the following syntax if you just want to block inbound emails. Just be careful as you'll have issues if email ever bounces.

To:test@abc.com REJECT

Cheers,
Philip.

Re: Sendmail need to block incoming mails

Philip Gunter — Tue, 21 Aug 2007 20:01:08 GMT

Oops forgot to add retain formatting

# more /etc/mail/access
test@abc.com REJECT
^^^

Re: Sendmail need to block incoming mails

Aashique — Tue, 21 Aug 2007 23:48:23 GMT

Hi,
you can try this way

vi /etc/mail/access
test@abc.com REJECT ( here no space, use tab)

then,
makemap hash access.db < access
Restart sendmail daemon

Hopefully it will work

Thanks & Regards

A.Aashique

Re: Sendmail need to block incoming mails

Ganesan R — Wed, 22 Aug 2007 04:40:43 GMT

Still no luck.

I have recreated the access file with in between the field(old file also same>

Then tried this also.
makemap hash access.db < access

Re: Sendmail need to block incoming mails

Philip Gunter — Wed, 22 Aug 2007 16:17:09 GMT

Hi Ganesan,

can you post your sendmail.cf?

Cheers,
Philip.