[gentoo-user] Sendmail virtusertable

[gentoo-user] Sendmail virtusertable

[Hiren Dave]

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Hi,

I am running sendmail 8.13 on RHELv4WS. Now I have configured this server1
as mailhub.
I have enter below lines in the /etc/mail/virtusertable file.

##########################/etc/mail/virtusertable####################
admin@guru.com  root@server1.guru.com
@yahoo.com  root@server1.guru.com
#####################################################################

Then I run this command.

# m4 virtusertable > virtusertable.db
# service sendmail restart
# echo "Nice to meet you." | mail -s Test admin@guru.com
# echo "Nice to meet you too." | mail -s Test hiren@yahoo.com

But all two mails are in queue and delayed since last 5 hours.

Any idea whats wrong?

TnR
Hiren

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Re: [gentoo-user] Sendmail virtusertable

[jarry]

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"Hiren Dave" <hiren2k4@gmail.com> wrote:

> I have enter below lines in the /etc/mail/virtusertable file.
> admin@guru.com  root@server1.guru.com
> @yahoo.com  root@server1.guru.com
> 
> Then I run this command.
> # m4 virtusertable > virtusertable.db
> # service sendmail restart
> # echo "Nice to meet you." | mail -s Test admin@guru.com
> # echo "Nice to meet you too." | mail -s Test hiren@yahoo.com
> 
> But all two mails are in queue and delayed since last 5 hours.

Do you have corresponding MX-record?
I mean, nameserver authorised for "guru.com" domain must have
MX record in guru.com zonefile, which says that server1.guru.com
is mailserver for guru.com domain, something like (for bind):

guru.com.     IN     MX     10     server1.guru.com.

Jarry

-- 
"Feel free" mit GMX FreeMail!
Monat für Monat 10 FreeSMS inklusive! http://www.gmx.net
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Sendmail virtusertable

[Hiren Dave]

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Hi,

Yes, I have MX record. This is a virtuserable concept.
admin@guru.com  root@server1.guru.com
@yahoo.com  root@server1.guru.com
entry in there and that means mails that are sent to admin and
yahoo.comshould go to root. Am I right?


On 3/23/06, jarry@gmx.net <jarry@gmx.net> wrote:
>
> "Hiren Dave" <hiren2k4@gmail.com> wrote:
>
> > I have enter below lines in the /etc/mail/virtusertable file.
> > admin@guru.com  root@server1.guru.com
> > @yahoo.com  root@server1.guru.com
> >
> > Then I run this command.
> > # m4 virtusertable > virtusertable.db
> > # service sendmail restart
> > # echo "Nice to meet you." | mail -s Test admin@guru.com
> > # echo "Nice to meet you too." | mail -s Test hiren@yahoo.com
> >
> > But all two mails are in queue and delayed since last 5 hours.
>
> Do you have corresponding MX-record?
> I mean, nameserver authorised for "guru.com" domain must have
> MX record in guru.com zonefile, which says that server1.guru.com
> is mailserver for guru.com domain, something like (for bind):
>
> guru.com.     IN     MX     10     server1.guru.com.
>
> Jarry
>
> --
> "Feel free" mit GMX FreeMail!
> Monat für Monat 10 FreeSMS inklusive! http://www.gmx.net
> --
> gentoo-user@gentoo.org mailing list
>
>

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Re: [gentoo-user] Sendmail virtusertable

[Jarry]

Hiren Dave wrote:

> Yes, I have MX record. This is a virtuserable concept.
> admin@guru.com  root@server1.guru.com 
> @yahoo.com      root@server1.guru.com 
> entry in there and that means mails that are sent to admin and yahoo.com 
> should go to root. Am I right?

I do not think so. At least I do not believe you own yahoo.com domain,
it means you can not set up your server1.guru.com as mailserver for
yahoo.com domain and redirect all yahoo.com mail to your server.

Please, understand, that virtsertable concept is a way of hosting
multiple mail-domains, but you need full control of that domains.
Or do you really believe that if you have:

@yahoo.com            root@server1.guru.com

it means you can "steal" all mail sent to all yahoo.com accounts?
No offense, but you do not mean it seriously, do you?  :-)

You can only *redirect* your mail in yahoo.com, but only on your
own accounts, and only if yahoo.com supports it. Or you can collect
your mail from yahoo.com through pop3/imap protocols at regular
intervals (again, only if yahoo.com supports it).

virtusertable covers local delivering, but *not sending*.
When your MTA (sendmail) gets a mail message for anything@yahoo.com,
it asks nameserver authorised for yahoo.com for corresponding
mail-server for deliveries, and *no matter* what you have in
virtusertable. But as I said, very probably you do not own yahoo.com
domain, so you can not define your server as mailserver for yahoo.com.

But, this all is possible to do for your own domain, guru.com,
if you really have full control of it. I think maybe it's the right
time to read something more about sendmail and bind, or some RFC
about how email works...

Jarry
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Sendmail virtusertable

[Hiren Dave]

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Hi,

Here I have used yahoo.com domain but it can be any domain lets say
domain.com. My network is not connected to Internet. Still do you think that
the following will not work if guru.com exists and domain.com does not
exists physically.

###############virtusertable###########################
  @domain.com          root@server1.guru.com
####################################################

TnR
Hiren

On 3/24/06, Jarry <jarry@gmx.net> wrote:

> Hiren Dave wrote:
>
> > Yes, I have MX record. This is a virtuserable concept.
> > admin@guru.com  root@server1.guru.com
> > @yahoo.com      root@server1.guru.com
> > entry in there and that means mails that are sent to admin and yahoo.com
> > should go to root. Am I right?
>
> I do not think so. At least I do not believe you own yahoo.com domain,
> it means you can not set up your server1.guru.com as mailserver for
> yahoo.com domain and redirect all yahoo.com mail to your server.
>
> Please, understand, that virtsertable concept is a way of hosting
> multiple mail-domains, but you need full control of that domains.
> Or do you really believe that if you have:
>
> @yahoo.com            root@server1.guru.com
>
> it means you can "steal" all mail sent to all yahoo.com accounts?
> No offense, but you do not mean it seriously, do you?  :-)
>
> You can only *redirect* your mail in yahoo.com, but only on your
> own accounts, and only if yahoo.com supports it. Or you can collect
> your mail from yahoo.com through pop3/imap protocols at regular
> intervals (again, only if yahoo.com supports it).
>
> virtusertable covers local delivering, but *not sending*.
> When your MTA (sendmail) gets a mail message for anything@yahoo.com,
> it asks nameserver authorised for yahoo.com for corresponding
> mail-server for deliveries, and *no matter* what you have in
> virtusertable. But as I said, very probably you do not own yahoo.com
> domain, so you can not define your server as mailserver for yahoo.com.
>
> But, this all is possible to do for your own domain, guru.com,
> if you really have full control of it. I think maybe it's the right
> time to read something more about sendmail and bind, or some RFC
> about how email works...
>
> Jarry
> --
> gentoo-user@gentoo.org mailing list
>
>

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Re: [gentoo-user] Sendmail virtusertable

[Jarry]

Hiren Dave wrote:

> Here I have used yahoo.com domain but it can be any 
> domain lets say domain.com . My network is not 
> connected to Internet. Still do you think that the following 
> will not work if guru.com exists and domain.com 
> does not exists physically.

If your domain is NOT connected to internet, how is your MTA
(sendmail) gonna find which mailserver is authorised for
"domain.com"? "domain.com" does not have to "exist", but there
MUST be a nameserver, authorised for "domain.com"...

In such a case, you must be sure, that your default nameserver
(in resolv.conf) is authorised for guru.com AND domain.com
(because as you said, your network is not connected to internet)
and that it has MX-record in zone-files for both domains pointing
to server1.guru.com.

I recommend that you start checking your nameserver first, with
"dig any domain.com", for example, or nslookup. In the answer there
must be something like "domain.com. IN MX 10 server1.guru.com."
If you do not get it, your nameserver is misconfigured, and
your MTA (sendmail) does not know where to deliver mail
for domain.com.

Once more:
1. nameserver authorised for a certain domain (e.g. domain.com)
  defines WHERE mail for this domain should be delivered
2. virtusertable maps virtual users to local mailboxes.
But just adding entry in virtusertable does not mean your
mailserver will get mail for that virtual user/domain...

And one more thing, there should be some entries in logs,
if your mail can not be delivered. If necessary, increase
log levels for bind/sendmail to get more info...

Jarry

BTW, could you please turn off that html-garbage?
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Sendmail virtusertable

[Boyd Stephen Smith Jr.]

On Saturday 25 March 2006 06:50, "Hiren Dave" <hiren2k4@gmail.com> wrote 
about 'Re: [gentoo-user] Sendmail virtusertable':
> Here I have used yahoo.com domain but it can be any domain lets say
> domain.com. My network is not connected to Internet. Still do you think
> that the following will not work if guru.com exists and domain.com does
> not exists physically.

Here's how mail delivery normally works:
1. Message is composed, and sending is initiatied.
2. (Optional) message is handed off to a MTA, this might be local, remote 
via SMTP, or a separate part of the same application.
3. The domain part of each of the destination addresses is queried for an 
MX record from DNS; if no MX record exists the A record is used instead.
4. An SMTP connection is made to the host (MX) or address (A) and the 
message is delivered there.
5. The MDA on that server decides what to do with the message.  The may 
involve forwarding (going back to step 2), local delivery (THIS IS WHERE 
THE VIRTUAL USER TABLE [or equivalent] IS QUERIED), or other actions.
6. Once final delivery is made to a mailbox (or the mailboxes), the 
recipients use POP, IMAP, Web, mbox, maildir, and/or other methods to read 
the mail.

Does that help?

If you are truly isolated from the internet, you can indeed make sure that 
the DNS MX record for yahoo.com points to your MDA and deliver 
foo@yahoo.com to a local mailbox, but it involves more than just your 
virtual user table.

-- 
"If there's one thing we've established over the years,
it's that the vast majority of our users don't have the slightest
clue what's best for them in terms of package stability."
-- Gentoo Developer Ciaran McCreesh
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Sendmail virtusertable

[Hiren Dave]

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Hi Jarry,

Thanks a lot for your time in solving my problem. I now understand the
concept of virtusertable.

TnR
Hiren


On 3/25/06, Jarry <jarry@gmx.net> wrote:
>
> Hiren Dave wrote:
>
> > Here I have used yahoo.com domain but it can be any
> > domain lets say domain.com . My network is not
> > connected to Internet. Still do you think that the following
> > will not work if guru.com exists and domain.com
> > does not exists physically.
>
> If your domain is NOT connected to internet, how is your MTA
> (sendmail) gonna find which mailserver is authorised for
> "domain.com"? "domain.com" does not have to "exist", but there
> MUST be a nameserver, authorised for "domain.com"...
>
> In such a case, you must be sure, that your default nameserver
> (in resolv.conf) is authorised for guru.com AND domain.com
> (because as you said, your network is not connected to internet)
> and that it has MX-record in zone-files for both domains pointing
> to server1.guru.com.
>
> I recommend that you start checking your nameserver first, with
> "dig any domain.com", for example, or nslookup. In the answer there
> must be something like "domain.com. IN MX 10 server1.guru.com."
> If you do not get it, your nameserver is misconfigured, and
> your MTA (sendmail) does not know where to deliver mail
> for domain.com.
>
> Once more:
> 1. nameserver authorised for a certain domain (e.g. domain.com)
> defines WHERE mail for this domain should be delivered
> 2. virtusertable maps virtual users to local mailboxes.
> But just adding entry in virtusertable does not mean your
> mailserver will get mail for that virtual user/domain...
>
> And one more thing, there should be some entries in logs,
> if your mail can not be delivered. If necessary, increase
> log levels for bind/sendmail to get more info...
>
> Jarry
>
> BTW, could you please turn off that html-garbage?
> --
> gentoo-user@gentoo.org mailing list
>
>

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Re: [gentoo-user] Sendmail virtusertable

[Hiren Dave]

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Hi,

Thank you for your reply. Now I understant it.

TnR
Hiren

On 3/26/06, Boyd Stephen Smith Jr. <bss03@volumehost.net> wrote:
>
> On Saturday 25 March 2006 06:50, "Hiren Dave" <hiren2k4@gmail.com> wrote
> about 'Re: [gentoo-user] Sendmail virtusertable':
> > Here I have used yahoo.com domain but it can be any domain lets say
> > domain.com. My network is not connected to Internet. Still do you think
> > that the following will not work if guru.com exists and domain.com does
> > not exists physically.
>
> Here's how mail delivery normally works:
> 1. Message is composed, and sending is initiatied.
> 2. (Optional) message is handed off to a MTA, this might be local, remote
> via SMTP, or a separate part of the same application.
> 3. The domain part of each of the destination addresses is queried for an
> MX record from DNS; if no MX record exists the A record is used instead.
> 4. An SMTP connection is made to the host (MX) or address (A) and the
> message is delivered there.
> 5. The MDA on that server decides what to do with the message.  The may
> involve forwarding (going back to step 2), local delivery (THIS IS WHERE
> THE VIRTUAL USER TABLE [or equivalent] IS QUERIED), or other actions.
> 6. Once final delivery is made to a mailbox (or the mailboxes), the
> recipients use POP, IMAP, Web, mbox, maildir, and/or other methods to read
> the mail.
>
> Does that help?
>
> If you are truly isolated from the internet, you can indeed make sure that
> the DNS MX record for yahoo.com points to your MDA and deliver
> foo@yahoo.com to a local mailbox, but it involves more than just your
> virtual user table.
>
> --
> "If there's one thing we've established over the years,
> it's that the vast majority of our users don't have the slightest
> clue what's best for them in terms of package stability."
> -- Gentoo Developer Ciaran McCreesh
> --
> gentoo-user@gentoo.org mailing list
>
>

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Re: [gentoo-user] Sendmail virtusertable

[Hiren Dave]

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Hi,

The sendmail configuration is as below.

#####################sendmail.mc##########################################
divert(-1)dnl
include(`/usr/share/sendmail-cf/m4/cf.m4')dnl
VERSIONID(`setup for Red Hat Linux')dnl
OSTYPE(`linux')dnl
define(`confDEF_USER_ID',``8:12'')dnl
define(`confTO_CONNECT', `1m')dnl
define(`confTRY_NULL_MX_LIST',true)dnl
define(`PROCMAIL_MAILER_PATH',`/usr/bin/procmail')dnl
define(`ALIAS_FILE', `/etc/aliases')dnl
define(`STATUS_FILE', `/var/log/mail/statistics')dnl
define(`UUCP_MAILER_MAX', `2000000')dnl
define(`confUSERDB_SPEC', `/etc/mail/userdb.db')dnl
define(`confPRIVACY_FLAGS', `authwarnings,novrfy,noexpn,restrictqrun')dnl
define(`confAUTH_OPTIONS', `A')dnl
define(`confTO_IDENT', `0')dnl
FEATURE(`no_default_msa',`dnl')dnl
FEATURE(`smrsh',`/usr/sbin/smrsh')dnl
FEATURE(`mailertable',`hash -o /etc/mail/mailertable.db')dnl
FEATURE(`virtusertable',`hash -o /etc/mail/virtusertable.db')dnl
FEATURE(redirect)dnl
FEATURE(always_add_domain)dnl
FEATURE(use_cw_file)dnl
FEATURE(use_ct_file)dnl
FEATURE(local_procmail,`',`procmail -t -Y -a $h -d $u')dnl
FEATURE(`access_db',`hash -T<TMPF> -o /etc/mail/access.db')dnl
FEATURE(`blacklist_recipients')dnl
EXPOSED_USER(`root')dnl
DAEMON_OPTIONS(`Port=smtp, Name=MTA')dnl
FEATURE(`accept_unresolvable_domains')dnl
FEATURE(promiscuous_relay)dnl
MAILER(smtp)dnl
MAILER(procmail)dnl
##########################################################################
#######################virtusertable######################################
admin@guru.com  root@server1.guru.com
administrator@guru.com root@server1.guru.com
dave@guru.com  root@server1.guru.com
@yahoo.com  root@server1.guru.com
@hotmail.com  root@server1.guru.com
@msn.com  %1@server1.guru.com
hirendave@msn.com root@server1.guru.com
##########################################################################
###########################local-host-names################################
# local-host-names - include all aliases for your machine here.
guru.com
server1.guru.com
server1
domain.com
#########################################################################

=> Here is the command output.
-----------------------------------------------------------------------
#sendmail -bv hiren@domain.com
hiren@domain.com... deliverable: mailer esmtp, host yahoo.com.guru.com.,
user hiren@domain.com.guru.com
-----------------------------------------------------------------------
It should return hiren@server1.guru.com and not hiren@domain.com.guru.com

also removing always_add_domain from sendmail.mc does helping.

TnR
Hiren
On 3/26/06, Hiren Dave <hiren2k4@gmail.com> wrote:
>
>  Hi,
>
> Thank you for your reply. Now I understant it.
>
> TnR
>  Hiren
>
>  On 3/26/06, Boyd Stephen Smith Jr. <bss03@volumehost.net> wrote:
> >
> > On Saturday 25 March 2006 06:50, "Hiren Dave" <hiren2k4@gmail.com >
> > wrote
> > about 'Re: [gentoo-user] Sendmail virtusertable':
> > > Here I have used yahoo.com domain but it can be any domain lets say
> > > domain.com . My network is not connected to Internet. Still do you
> > think
> > > that the following will not work if guru.com exists and domain.comdoes
> > > not exists physically.
> >
> > Here's how mail delivery normally works:
> > 1. Message is composed, and sending is initiatied.
> > 2. (Optional) message is handed off to a MTA, this might be local,
> > remote
> > via SMTP, or a separate part of the same application.
> > 3. The domain part of each of the destination addresses is queried for
> > an
> > MX record from DNS; if no MX record exists the A record is used instead.
> > 4. An SMTP connection is made to the host (MX) or address (A) and the
> > message is delivered there.
> > 5. The MDA on that server decides what to do with the message.  The may
> > involve forwarding (going back to step 2), local delivery (THIS IS WHERE
> > THE VIRTUAL USER TABLE [or equivalent] IS QUERIED), or other actions.
> > 6. Once final delivery is made to a mailbox (or the mailboxes), the
> > recipients use POP, IMAP, Web, mbox, maildir, and/or other methods to
> > read
> > the mail.
> >
> > Does that help?
> >
> > If you are truly isolated from the internet, you can indeed make sure
> > that
> > the DNS MX record for yahoo.com points to your MDA and deliver
> > foo@yahoo.com to a local mailbox, but it involves more than just your
> > virtual user table.
> >
> > --
> > "If there's one thing we've established over the years,
> > it's that the vast majority of our users don't have the slightest
> > clue what's best for them in terms of package stability."
> > -- Gentoo Developer Ciaran McCreesh
> > --
> > gentoo-user@gentoo.org mailing list
> >
> >
>

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