Hi,
I have a problem where viruses are mailing themselves to mydomain with a sender address of mydomain. Is there any way to deny external relays sending messages like this?
Here are the logs from my sendmail machine which then relays onto the exchange smtp server. as you can see the email comes in from admin@mydomain.com to bob@mydomain.com then gets a bounce message for unknown sender and I end up with the bounce message in my mailbox which is very annoying.
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Jun 3 08:56:32 apollo sm-mta[21179]: j537uVDj021179: from=<admin@mydomain.com>, size=68413, class=0, nrcpts=1, msgid=<200506030756.j537uVDj021179@sendmail.mydomain.com>, proto=ESMTP, daemon=IPv4, relay=[193.41.180.134]
Jun 3 08:56:33 apollo sm-mta[21181]: j537uVDj021179: to=<bob@mydomain.com>, delay=00:00:02, xdelay=00:00:01, mailer=esmtp, pri=98413, relay=smtp.mydomain.com. [194.74.225.108], dsn=5.1.1, stat=User unknown
Jun 3 08:56:33 apollo sm-mta[21181]: j537uVDj021179: j537uXDj021181: DSN: User unknown
Jun 3 08:56:33 apollo sm-mta[21181]: j537uXDj021181: to=<admin@mydomain.com>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=99437, relay=smtp.mydomain.com. [194.74.225.108], dsn=2.0.0, stat=Sent ( <200506030756.j537uXDj021181@apollo.mydomain.com> Queued mail for delivery)
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Any help appreciated
Simon
I have a problem where viruses are mailing themselves to mydomain with a sender address of mydomain. Is there any way to deny external relays sending messages like this?
Here are the logs from my sendmail machine which then relays onto the exchange smtp server. as you can see the email comes in from admin@mydomain.com to bob@mydomain.com then gets a bounce message for unknown sender and I end up with the bounce message in my mailbox which is very annoying.
[tt]
Jun 3 08:56:32 apollo sm-mta[21179]: j537uVDj021179: from=<admin@mydomain.com>, size=68413, class=0, nrcpts=1, msgid=<200506030756.j537uVDj021179@sendmail.mydomain.com>, proto=ESMTP, daemon=IPv4, relay=[193.41.180.134]
Jun 3 08:56:33 apollo sm-mta[21181]: j537uVDj021179: to=<bob@mydomain.com>, delay=00:00:02, xdelay=00:00:01, mailer=esmtp, pri=98413, relay=smtp.mydomain.com. [194.74.225.108], dsn=5.1.1, stat=User unknown
Jun 3 08:56:33 apollo sm-mta[21181]: j537uVDj021179: j537uXDj021181: DSN: User unknown
Jun 3 08:56:33 apollo sm-mta[21181]: j537uXDj021181: to=<admin@mydomain.com>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=99437, relay=smtp.mydomain.com. [194.74.225.108], dsn=2.0.0, stat=Sent ( <200506030756.j537uXDj021181@apollo.mydomain.com> Queued mail for delivery)
[/tt]
Any help appreciated
Simon