unknown reciever Esmtp

Posted by Morteza Soltanabadiyan on Server Fault See other posts from Server Fault or by Morteza Soltanabadiyan
Published on 2013-10-14T06:26:41Z Indexed on 2013/10/19 15:58 UTC
Read the original article Hit count: 196

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linux

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ubuntu

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smtp

I found this in my log server:

sm-mta[11410]: r9BKb6YY021119: to=<[email protected]>, ctladdr=<[email protected]> (33/33), delay=2+07:24:18, xdelay=00:00:01, mailer=esmtp, pri=29911032, relay=mail1.mkuku.com. [58.22.50.83], dsn=4.0.0, stat=Deferred: Connection refused by mail1.mkuku.com.

This message is repeated every 10-30 seconds with a different "to" address.

What is this? Is my server being used to send spam?

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