Sending mail without sendmail or highly secure sendmail
I am setting up a very secure Red Hat Enterprise Linux Advanced Server
version 4 update 6 server. My sendmail version is 8.13.1. My mail
server is a Windows 2003 Server with Exchange 2003 with its patches.
They are both on the same subnet. DNS is on and it will resolve the
mail server's name and IP. SSH, SCP, SFTP, and such tools are the
only networkable protocols on. NFS if off, MOUNTD is off, PORTMAP is
off, and such.
Until just recently sendmail was off on the RHEL server as part of the
hardening procedure. However part of the auditing requirements is for
a mail messag...How do I configure Sendmail to reject all mail to domains not in /etc/mail/access file?
I've got a serious spam problem on one my server which is running
Sendmail 8.13.1. I've been struggling with iptables, although efficient
but not manageable in the long run.
The problem really is bad scripts made by users on their webpages, but
it is impossible for me to debug these. So this is why I'm looking for
information on how to block all @domain.tld's while maintaining the
ability to send mail to certain specified domains in the
Thus far, I've also been adding domain.tld in local-host-names and
relaying all @domain.tld to a local...problem with sendmail, not sending mails to some mail servers like yahoo except gmail
hi this is sasidhar,
we have CentOS5 with default sendmail configuration.
Initially it is sending mails to gmail, yahoo etc. last few days it is
not sending mails to yahoo.
In maillog I observed that for yahoo mails the stat value is deferred.
I tried everything by browsing google but I didn't find any solution
to this problem.
Finally I came here with lots of hope.
In mail queue there are more than 1 lack, most of them yahoo, rediff
etc. For gmail it is not giving any problem every mail is going.
please give any suggestions to solve this problem.
On 11/5/2009 11:...newbie question: sendmail doesn't send mail to external mail account.
It seems send mail doesn't send mail to external mail account in my FreeBSD
4.8 BOX. However, I'm able to receive mail from external mail, such as
yahoo, hotmail account.
My config is:
ISP: bell Sympatico high speed with dynamic IP address.
SMTP port is enabled on the router/firewall.
Can anyone help?
bluesnow#mail -v email@example.com
Subject: This is a test.
Do you hear me?
firstname.lastname@example.org... Connecting to [127.0.0.1] via relay...
220 bluesnow.gotdns.com ESMTP Sendmail 8.12.8p1/8.12.8; Thu, 26 Jun 2003
17:14:51 -0400 (EDT)
>>> EHLO bluesnow.gotdns.com
250-bluesnow.gotdns.com Hello localhost [127.0.0.1], pleased to meet you
>>> MAIL From:<email@example.com> SIZE=68
250 2.1.0 <firstname.lastname@example.org>... Sender ok
>>> RCPT To:<email@example.com>
250 2.1.5 <firstname.lastname@example.org>... Recipient ok
354 Enter mail, end with "." on a line by itself
250 2.0.0 h5QLEpDJ006984 Message accepted for delivery
email@example.com... Sent (h5QLEpDJ006984 Message accepted for delivery)
Closing connection to [127.0.0.1]
221 2.0.0 bluesnow.gotdns.com closing connection
bluesnow# sendmail -bp
/var/spool/mqueue (2 requests)
-----Q-ID----- --Size-- -----Q-Time----...Sendmail authentificates, client cann still send mails with fake "Mail From:" tag
i've just finished my first AUTH sendmail configuration, client cann
authentificate himself via LOGIN/PLAIN with TLS. I've noticed though
that sendmail doesn't pose any restraints regarding the mail from: tag.
lets say my domain is test.de, my loginname ist alex
now i cand send mails from arbitrary name@ test.de...actually from
arbitrary name @ arbitrary domain :)
Am i missing something here ?
what i would like is: user authentificates -> he is allowed to send
mail only with the prior stipulated address (his address)
> hell...sendmail for only sending mail
i want to be able to use sendmail to just send mail from a pipe...
nothing more than that (meaning, no need for handling queue, etc.)
so far, any linux i logged in to could do this by doing:
# /usr/sbin/sendmail firstname.lastname@example.org
.... Type in message using headers etc
and that's it, the message would be sent.
however, in my fresh fedora installation, i cannot make sendmail
terminate... it accepts input from std input, but "." does not send
the message nor does ^D, nothing. i can't find in sendmail.cf a
mention of "termination symbol". any ideas?
(i thou...Sendmail cannot send my mail
I am on a typical home user setup (dialup connection, SMTP server
listens on exotic port 25000 and I need to enter a password to connect
to the server).
The various mailers I have used - outlook, outlook express, mozilla
mail - have no problems sending my mail successfully.
But when I try to use sendmail all I get is something like:
Nov 22 18:56:51 turki sendmail: iAL4OmF22670:
email@example.com, ctladdr=gavron (500/500), delay=1+19:32:03,
xdelay=00:00:10, mailer=relay, pri=815114, relay=b.mx.mailbarn.net.
[126.96.36.199], dsn=4.0.0, stat=Defer
red: Connection refused by b.mx.mailbarn...sendmail only send mails
I managed to upgrade to sendmail 8.12.9 tonight. Sending out
emails fine, but cannot receive email from outside. I am behind
a router (ADSL dialup).
I use Yahoo account to do the test, till now it doesn't show
any error messages about the email sent to my host. I set an
entry for MX record in the dynamic DNS's website. I also have
the following sendmail.mc:
dnl This is the sendmail macro config file. If you make changes to
dnl you need the sendmail-cf rpm installed and then have to generate a
dnl new /etc/mail/sendmail.cf by running the following comman...How do I configure sendmail to recognize my SMTP server, so that I can send mail with mutt?
I'm trying to convert to Mutt, but can't get it to send mail. The problem
is how sendmail's set up. How can I point send mail to
naSota@tPampabay.rAr.cMom - > (remove capital letters: SPAM)
...How to prevent local user daemon for sending mails with Sendmail configured as SMTP authentication.
We have installed sendmail with SMTP authentication on our server with
virtual hosting for different domains. Everything was working fine
I installed apache from source which is running as user daemon. Our
sendmail server mailqueue is flooded with messages from
Following is the log from the sendmail maillog file:
ul 2 09:38:26 190877-dev1 sendmail: STARTTLS=client,
relay=[127.0.0.1], version=TLSv1/SSLv3, verify=FAIL,
cipher=DHE-RSA-AES256-SHA, bits=256/256 Jul 2 09:38:26 190877-dev1
from=<firstname.lastname@example.org...mails sent by sendmail were treated as junk mail
I am a newbie of sendmail and trying to configure it to work as my
main mailserver which allow POP3 and SMTP connection from outside. My
problem is that I cannot send out any mails which appears like sender:
email@example.com. If I send mail through terminal, my sent-out mail
would looks like firstname.lastname@example.org instead of
email@example.com. hostnam.mydomain.com is a qualified name of my linux
box runing sendmail. Second, I configured a openwebmail on this linux
box to allow users login from anywhere to manager their mails, and it
works fine. However, all the out-going mails se...Sendmail refuses to send mail
only recently have I started using sendmail (8.11) on a RedHat 7.1 linux machine.
Up till now I've only been able to receive e-mail (both local and remote).
Sending e-mail to a valid e-mail address stops with a dsn 4.0.0 and "no route to host", even though I can ping the domain in the e-mail address. Traceroute however is unable to come up with an answer.
What do I do wrong? Any place I can find a clear description of what is happening?
Thanks in advance!
--------------= Posted using GrabIt =----------------
------= Binary Usenet downloading made easy =---------
-= ...Configuring Sendmail for outbound mail only
Hello, and thanks for reading.
The company I work for has setup a Fedora Core 4 box as a webserver.
This server will be hosting a Flash game that uses a PHP connection to
a MySQL database. The server is properly configured for SSL. When
someone plays and wins the Flash game, an email is generated.
Everything upto the email works. The Flash game uses the "mail"
command and has been tested on another Linux box. The problem seems
to be Sendmail. (or rather, it's configuration) The server will
never need to receive mail - only send. It also does not resolve to a
URL by design...Configuring sendmail for mailing lists
I am configuring a mail server for a group that needs to send out mail
to some of their large mailing lists (I'm verifying that they are not
spam lists), because their current service does not seem to cut it for
them. What I would like to do is give them an easy way to compose the
message in their own clients, and then send them via Certificate
authenticated SMTP to the groups that they want. I think that they
easiest way for them to do this would be to have a single alias to which
they can mail their message, and have the server mail out to the rest of
I want to ...send mail without.. sendmail ?
It seems, in order to send mail off my ftp server, that I must
run sendmail as a daemon process even if I dont want a mailer
Is there a way to tell sendmail:
"Hey, I dont want you sitting on port 25.
Just grab the stuff that has accumulated in
/var/spool/*que, find the MX record for the
recipient, and send it." ?
I dont know anything about configuring sendmail, other
than it's more than I can handle as a part time admin.
bad_knee <firstname.lastname@example.org> wrote:
> It seems, in order to send mail off my ftp server, that I must run
> sen...Sendmail Delay Sending Mail
Hi, I hope someone can help me.
I have spent a few days going through other posts concerning delays in
sendmail but none of the suggestions seem to help me.
Heres my problem.
I have a Redhat 9 Linux server running sendmail 8.12.8 and my server
needs to send a high volume of mail from php scripts.
Previously I had my sendmail set to queue only and the scripts ran
fast and the q went up quickly but the mail got sent.
Something must have changed in the configuration or somewhere on the
server as now when I run the scripts they take up to a minute to
return the mail status to the script so the volume of mail i can send
is ridiculously slow. I have checked the following:
An NSLookup on my server returns an answer immdiately but i do not via
a local DNS server. I have Bind DNS installed on the server but it
just contains information for the local domains running on this
My mailog does not appear to be showing any errors and i have the
loglevel on 9.
Will someone please help a poor struggling developer whos going round
in circles on the FAQs and news groups whilst loosing money poor
volume of mail being sent!
> Hi, I hope someone can help me.
> I have spent a few days going through other posts concerning delays in
> sendmail but none of the suggestions seem to help me.
> Heres my problem.
> I have a Redhat 9 Linux server running sendmail 8.12.8 and my server
> needs ...Problem to send out the mails with SENDMAIL
am using RedHat 9 and sendmail. I can send mail to internal box of the same
a have problem to send mail out of office by using another smtp server of
company wich is connected to internet.
my DNS configuration work fine. I can ping my smtp server and connect to
smtp port (all work fine)
I think that a problem is around "sendmail.cf" or "sendmail.mc"
The sendmail log file informe that the messages sended are queued.
I am using command line to test (mail)
you can find my configuration file bellow :
can somone help me ?
Thanks a lot for your help
+...configuring sendmail to recieve mail
I've installed irix 6.5.18F and want to configure sendmail so it will
recieve mail. I've punched port 25 through my firewall and all should be
working but it's not.
I can send mail from my indy to my work account but it won't recieve it :(
Any idea what I need to configure?
System Administrator / EM Technician
Dept. Of Materials
University Of Oxford
Tel: 01865 273785
Fax: 01865 283333
GNU Humour 'Technical Thug'
ooooo ooo o8o
`888' `8' `"'
888 8 ooo. .oo. oooo oooo ooo
888 8 `888P"Y88b `888 `88b..8P'
888 8 888 888 888 Y888'
`88. .8' 888 888 888 .o8"'88b
`YbodP' o888o o888o o888o o88' 888o http://www.unix.org/
Khalid Schofield wrote:
> I've installed irix 6.5.18F and want to configure sendmail so it will
> recieve mail. I've punched port 25 through my firewall and all should be
> working but it's not.
> I can send mail from my indy to my work account but it won't recieve it :(
> Any idea what I need to configure?
Read about this in the book before, check your maillog see if it says
reject=550 and relay denied, if so, you n...Sendmail not sending mails immediately
We've got a Solaris 9 x86 box which sends notification mails and we
would like those mails to be sent immediately. Currently there are
sitting in the queue a few minutes and then they get sent. I didn't
configure anything differently no that box. And sendmail is running as
root 282 1 0 Dec 21 ? 0:01 /usr/lib/sendmail -bd -q15m
smmsp 283 1 0 Dec 21 ? 0:00 /usr/lib/sendmail -Ac -q15m
My question now is: how do I configure sendmail to send immediately mails ?
> root 282 1 0 Dec 21 ? 0:01 /usr/lib/sendmail -bd -q15m
> smmsp 283 1 0 Dec 21 ? 0:00 /usr/lib/sendmail -Ac -q15m
Replace -q15m with -q1s
To contact me remove the "NOSPAM" part from my e-mail address.
I should add that -q1s implies that sendmail will process the mail queue
every single second... so it's unnecessary overhead. I suggest you try
with -q1m so it's once every minute... it's not too bad, but it could
still be too much overhead for your system. Try to find a compromise
between response times and overhead.
I suggest you read the sendmail manual page for further information about
the command line options...
To contact me remove the "NOSPAM" part from my e-mail address.
Syn <syn_NOSPAM_uw@hotmail.com> writes:
>We've got a Solaris 9 x86 box which sends notification mails an...Configure sendmail for outgoing mail
I have cron set up to send me the output of a particular command, but
it only gets "e-mailed" to root on the system. I want to configure
sendmail (unless there is a much simpler way) so that cron will be able
to send an e-mail to a real e-mail address. So I just want to know how
to set up Linux to send outgoing mail; I'm not interested in a full
mail server. Can anyone help?
On 2005-04-20, robbie <email@example.com> wrote:
> I have cron set up to send me the output of a particular command, but
> it only gets "e-mailed" to root on the system. I want to configure
> sendmail (unless there is a much simpler way) so that cron will be able
Just install sendmail, the plain installation is enough, then set an
alias for root that forward mail to the real address. That's it.
Q: What does the CE in Windows CE stand for?
A: Caveat Emptor.
I set up the alias but I get an "undeliverable" message in the system
mailbox regarding the external address. Do I have to do something
somewhere else to get Linux to recognize external e-mail addresses? As
you may have guessed, I have no idea what I'm doing.
> I set up the alias but I get an "undeliverable" message in the system
> mailbox regarding the external address. Do I have to do something
> somewhere else to get Linux to recognize external e-mail addresses? As
> you may have guessed, I have no idea ...how to force sendmail to forward mails to another mail server?
Currently we have 2 machines for mail (a smtp server and a pop server)
Currently, sendmail accepts and sends out mail for our domain. We'd
like sendmail to just send out mails but when it receives mails, it
should forward it to our pop server. should we use mailertable for
this or some other method?
thanks for any info
ike lozada schrieb:
> Hi all,
> Currently we have 2 machines for mail (a smtp server and a pop server)
> Currently, sendmail accepts and sends out mail for our domain. We'd
> like sendmail to just send out mails but when it receives mails, ...sendmail patch overwrites /etc/mail/sendmail.cf
just installed patch 122857-02 (would be 122856 on SPARC) on my machine. Why
does this patch overwrite my (custom) /etc/mail/sendmail.cf?
This file is marked in the /var/sadm/install/contents database as "e" so
should be left alone during patch installation.
At least a notice in the patch README would have been nice, but this file
just contains useless NOTEs most of the time.
Better leave the sendmail.cf alone if it has been changed from the
installed one (can be simply checked with the checksum in
On Fri, 28 Apr 2006, Daniel Rock...Mail will not send mail but will receive mail
At work I have a Wallstreet with Jaguar connected to a DSL line. Up
until a couple days ago I have been able to use my personal ISP smtp
address to send and receive mail. This is not the same company as the
DSL provider. A couple days ago I was able to receive posts but not
send them. I tried repairing permissions, and trashing the Mail prefs.
Finally I emailed my ISP and the response was that I have to use the
DSL carrier's smtp address. Yet, I've been using my personal ISP's smtp
address for about a year.
At home I use a dialup with the ISP and everything works fi...Mail::Sendmail cannot connect to localhost but the mail command can
I have a script that uses Mail::Sendmail, this script works just fine
in 4 different boxes (RedHat and Solaris).
Nevertheless, there is this Solaris machine where it doesn't work, and
this is the error I get in the $Mail::Sendmail::error variable:
connect to localhost failed (Connection refused)
The thing that puzzles me, is that in the same machine, the mail
command works just fine.
39 sfx@et2:ver_2> mail firstname.lastname@example.org
As far as I know, mail tries to send emails via the localhost SMTP
just as Mail::Sendmail does.
I also tried c...