topic Re: sendmail tweak again in Operating System - Linux

sendmail tweak again

Vijaya Kumar_3 — Fri, 24 Oct 2003 08:42:08 GMT

I am facing a problem in sendmail.

My machine is configured as web.mydomain.com. And i am sending mails on behalf of mydomain.com. But i am not receiving mails for mydomain.com. It is another host called mx.mydomain.com.

It is just fine with MASQUERADE_AS command with sendmail.mc. Now the problem is i am unable to send mails to mx.mydomain.com

I did a
/usr/sbin/sendmail -v -d8.99 -d38.99 someuser@mydomain.com
It is saying

user@mydomain.com... Connecting to mx.mydomain.com. via esmtp...
user@mydomain.com... Deferred: Connection reset by mx.mydomain.com.

Can u pls help me

Tia
Vijay

Deferred: Connection reset by mx.mysite.com

Re: sendmail tweak again

Steven E. Protter — Fri, 24 Oct 2003 09:00:22 GMT

Easy one I think.

You need an entry in the /etc/mail/access file

hostname RELAY

or

IP_adderss RELAY

Once again tab delimited.

save the file.

Then run a script to build the hash databaases. I attached a copy to your prior thread.

SEP

Re: sendmail tweak again

Steven E. Protter — Fri, 24 Oct 2003 09:04:56 GMT

That change I posted needs to be done on the server thats resetting the connection, not the sending server.

SEP

Re: sendmail tweak again

Vijaya Kumar_3 — Fri, 24 Oct 2003 09:06:45 GMT

Thanks steven for your help

-Vijay

Re: sendmail tweak again

Vijaya Kumar_3 — Fri, 24 Oct 2003 11:55:30 GMT

hey steven,

you mean my IP is blocked on ther other server? I dont have access to the MX server. it is maintained by others. I am able to connect from other hosts, from my laptop, i am able to do "telnet mx.mydomain.com 25" and it is connecting.
but not from my linux machine? why?
thanks

Re: sendmail tweak again

Kasper Haitsma — Mon, 27 Oct 2003 04:36:09 GMT

Vijay,

There is a workaround, not clean, but it will do. In another threat, you mentioned, that outgoing mail now works fine. Find out which system is relaying these succesful message from the maillog file. Add this as your Relay server in sendmail.cf (I'm not familiar with mc building). This way all your outgoing mail will travel through this relay server.

HTH

Kasper

Re: sendmail tweak again

U.SivaKumar_2 — Mon, 27 Oct 2003 05:51:52 GMT

Hi,

"connection reset by mx.mysite.com" error has nothing to do with relaying access control in /etc/mail/access. Morever Relaying does not happen in this case.

Have you got any firewall or IP filtering between these web.mydomain.com and mx.mydomain.com ?.

Please call the service provider of mx.mydomain.com and confirm that there is no IP blocking done for your network using firewalls etc.

Also ask them that whether that SMTP host mx.mydomain.com strictly checks Reverse PTR records of the connecting hosts thru SMTP. If yes , you may request to add PTR record for web.mydomain.com to your network's in-addr.arpa zone registrar.

you cannot receive mail for mydomain.com in web.mydomain.com since the MX record for mydomain.com is configured as mx.mydomain.com in your DNS server.

regards,

U.SivaKumar