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тАО08-13-2011 05:06 AM
тАО08-13-2011 05:06 AM
sendmail can not relay mail to exchange server
My goal is to be able to send all email through my Linux server using sendmail, to Exchange Server. I have added Exchange Server entry in /etc/mail/sendmail.cf file but still it is relaying to localhost.localdomain.
Red Hat OS
[root@vburplsmtp06 root]# cat /etc/redhat-release Red Hat Enterprise Linux ES release 3 (Taroon Update 8)
sendmail version
[root@vburplsmtp06 root]# rpm -qa | grep -i sendmail* sendmail-cf-8.12.11-4.RHEL3.6 sendmail-8.12.11-4.RHEL3.6
RelayHost entry in sendmail.cf file
[root@vburplsmtp06 root]# cat /etc/mail/sendmail.cf | grep -e DS DSmailhost # Return-Receipt-To: header implies DSN request # DHParameters (only required if DSA/DH is used)
/etc/hosts file
[root@vburplsmtp06 mail]# cat /etc/hosts # Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 localhost.localdomain localhost 146.178.24.70 vburplsmtp06 mail2.alinta.net.au 146.178.73.228 mailhost
resolv.conf
[root@vburplsmtp06 root]# cat /etc/resolv.conf domain alinta.net.au search alinta.net.au ue.com.au nameserver 218.185.65.254 nameserver 203.94.140.38 nameserver 203.94.129.130 nameserver 146.178.22.217 nameserver 146.178.73.217
/var/log/maillog output
Aug 13 21:29:41 vburplsmtp06 sm-msp-queue[19707]: p7D6jqcT014362: p7DBQp1j019707: sender notify: Warning: could not send message for past 4 hours Aug 13 21:29:41 vburplsmtp06 sendmail[19734]: alias database /etc/aliases.db out of date Aug 13 21:29:41 vburplsmtp06 sendmail[19734]: p7DBSiEX019734: from=<>, size=10664, class=0, nrcpts=1, msgid=<201108131129.p7DBQp1j019707@mail2.alinta.net.au>, proto=ESMTP, daemon=MTA, relay=localhost.localdomain [127.0.0.1]
Tried to send mail manually and it is pointing relayhost to localhost.localdomain
[root@vburplsmtp06 root]# sendmail -v root test . root... Connecting to [127.0.0.1] via relay... 220 mail2.alinta.net.au ESMTP Sendmail 8.12.11.20060308/8.12.11; Sat, 13 Aug 2011 20:48:54 +1000 >>> EHLO mail2.alinta.net.au 250-mail2.alinta.net.au Hello localhost.localdomain [127.0.0.1], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-AUTH GSSAPI 250-DELIVERBY 250 HELP >>> MAIL From:<abanerjee@mail2.alinta.net.au> SIZE=5 AUTH=abanerjee@mail2.alinta.net.au 250 2.1.0 <abanerjee@mail2.alinta.net.au>... Sender ok >>> RCPT To:<root@mail2.alinta.net.au> >>> DATA 250 2.1.5 <root@mail2.alinta.net.au>... Recipient ok 354 Enter mail, end with "." on a line by itself >>> . 250 2.0.0 p7DAmsYo019039 Message accepted for delivery root... Sent (p7DAmsYo019039 Message accepted for delivery) Closing connection to [127.0.0.1] >>> QUIT 221 2.0.0 mail2.alinta.net.au closing connection
Tried to send mail manually through Exchange Server (mailhost - 146.178.73.228) and I got the mail in my mailbox.
[root@vburplsmtp06 root]# telnet mailhost 25 Trying 146.178.73.228... Connected to mailhost (146.178.73.228). Escape character is '^]'. 220 VTALPWSMTP05.alinta.net.int Microsoft ESMTP MAIL Service, Version: 6.0.3790.4675 ready at Sat, 13 Aug 2011 21:49:41 +1000 HELO 250 VTALPWSMTP05.alinta.net.int Hello [146.178.24.70] MAIL FROM: root@vburplsmtp06 250 2.1.0 root@vburplsmtp06....Sender OK RCPT TO: barunab@maxis.com.my 250 2.1.5 barunab@maxis.com.my DATA 354 Start mail input; end with <CRLF>.<CRLF> This is a test mail . 250 2.6.0 <VTALPWSMTP05WEsBk310000137e@VTALPWSMTP05.alinta.net.int> Queued mail for delivery QUIT 221 2.0.0 VTALPWSMTP05.alinta.net.int Service closing transmission channel Connection closed by foreign host.
So why sendmail is always pointing "relay=localhost.localdomain [127.0.0.1]" why not "mailhost" after adding the "DSmailhost" entry
Please help.
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тАО08-13-2011 10:46 AM
тАО08-13-2011 10:46 AM
Re: sendmail can not relay mail to exchange server
Could you please paste configuration for
#more /etc/mail/access
Thanks
BR
Naj
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тАО08-13-2011 10:55 AM
тАО08-13-2011 10:55 AM
Re: sendmail can not relay mail to exchange server
Please find /etc/mail/access entry as below
[root@vburplsmtp06 root]# cat /etc/mail/access # Check the /usr/share/doc/sendmail/README.cf file for a description # of the format of this file. (search for access_db in that file) # The /usr/share/doc/sendmail/README.cf is part of the sendmail-doc # package. # # by default we allow relaying from localhost... localhost.localdomain RELAY localhost RELAY 127.0.0.1 RELAY
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тАО08-13-2011 06:12 PM
тАО08-13-2011 06:12 PM
Re: sendmail can not relay mail to exchange server
Hi,
How about sendmail.mc file configuration, did you add relay server there?
#vi sendmail.mc
dnl define(`SMART_HOST',`smtp.your.provider')dnl
replace your mail exchange server as below
define(`SMART_HOST',`exchange-server name')
::save configuration
# m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf
Thanks
BR
Naj
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тАО08-13-2011 11:28 PM
тАО08-13-2011 11:28 PM
Re: sendmail can not relay mail to exchange server
This entry I have added already.
[root@vburplsmtp06 mail]# cat sendmail.mc | grep -e mailhost define(`SMART_HOST',`mailhost') [root@vburplsmtp06 mail]#
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тАО08-15-2011 07:32 AM
тАО08-15-2011 07:32 AM
Re: sendmail can not relay mail to exchange server
In /etc/hosts, you have told "mail2.alinta.net.au" is an alias for vburplsmtp06.
Your test message is addressed to "abanerjee@mail2.alinta.net.au". Because the destination hostname matches one of the aliases of the local host, our sendmail will notice this is supposed to be a local recipient, so there is no reason to use a smarthost. It will attempt to deliver the mail locally, typically to Unix mailbox file /var/mail/abanerjee (assuming that such an user exists on the system).
The "forwarding to localhost" happens because in RHEL 3 and newer, Sendmail runs as two separate processes:
# ps -ef |grep send root 4078 1 0 Jul04 ? 00:01:59 sendmail: accepting connections smmsp 4087 1 0 Jul04 ? 00:00:00 sendmail: Queue runner@01:00:00
All the messages are first forwarded to the local Sendmail queue runner process, which will then make the necessary outgoing connections and/or invoke the local delivery agent as necessary.
If you want absolutely all mail (even the messages addressed to local recipients) to go to exchange server, you should add
define(`MAIL_HUB',`mailhost')
to your sendmail.mc, and then regenerate your sendmail.cf using these commands:
cd /etc/mail make
(The /etc/mail/Makefile contains instructions for the "make" command, including the correct m4 command line for regenerating the sendmail.cf using the sendmail.mc as a template.)
Sendmail's logic works out like this:
- Is MAIL_HUB set? If yes, send message to MAIL_HUB server for further delivery; otherwise continue.
- Is the destination address local? If yes, then deliver locally; otherwise continue.
- Is SMART_HOST set? If yes, send message to SMART_HOST server for further delivery; otherwise continue.
- (all the other steps required to find and contact a remote mail server over the Internet)
If you use MAIL_HUB, your Exchange server must be prepared to accept and handle incoming messages addressed to destinations like "root@mail2.alinta.net.au", "root@vburplsmtp06" or maybe even just "root" in some meaningful fashion.
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тАО08-19-2011 11:12 AM
тАО08-19-2011 11:12 AM
Re: sendmail can not relay mail to exchange server
Hi Matti,
Thanks for the explantaion. But after implementing the steps "define(`MAIL_HUB',`mailhost')" still I am facing the same problem.
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тАО09-08-2011 11:41 AM
тАО09-08-2011 11:41 AM
Re: sendmail can not relay mail to exchange server
If you use an IP of the exchange server for the DS directive, can you relay mail?
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тАО09-18-2011 11:54 PM
тАО09-18-2011 11:54 PM
Re: sendmail can not relay mail to exchange server
Did you resolved the problem or it is still appears?