Re: [Exim] DNS problems in using exim 4.20

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Author: Suresh Ramasubramanian
Date:  
To: Sandip Bhattacharya
CC: exim-users
Subject: Re: [Exim] DNS problems in using exim 4.20
Sandip Bhattacharya [8/18/2003 10:02 AM] :
> hosts_require_auth = master.puroga.com
> However, "host master.puroga.com" returns,
> --------------------
> master.puroga.com is an alias for puroga.com.
> puroga.com has address 66.98.128.18
> ns1.puroga.com has address 66.98.128.200
> ns2.puroga.com has address 66.98.128.200
> ---------------------
>
> Not only is authentication not attempted, the SMTP connection is attempted
> on a wrong DNS address (66.98.128.200) instead of [66.98.128.18]


Set your smarthost router to be -

route_list = * [master.puroga.com] byname

byname stops dns lookups at your end for domains you send mail to.

[master.puroga.com] prevents it from being resolved further to cnames
etc. And, did you notice that ns1.puroga.com, master.puroga.com, etc
are all aliased onto the same box?

frodo:~ telnet 66.98.128.200 25
Trying 66.98.128.200...
Connected to 66.98.128.200.
Escape character is '^]'.
220-master.puroga.com ESMTP Exim 4.20 #1 Mon, 18 Aug 2003 10:08:46 +0530
220-We do not authorize the use of this system to transport unsolicited,
220 and/or bulk e-mail.
quit
221 master.puroga.com closing connection
Connection closed by foreign host.

    srs