ot a bit: sendmail and TO mx not found

Randal, Phil phil.randal at hoopleltd.co.uk
Tue Sep 2 15:05:59 IST 2014

Not sure what’s going on there, but this should help:




From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of ja at conviator.com
Sent: 02 September 2014 13:20
To: mailscanner at lists.mailscanner.info
Subject: ot a bit: sendmail and TO mx not found


its a bit OT but I hope its OK anyway. We are also using Mailscanner as outbound scanner and see a problem that I cannot figure out - probably some setting im missing.

sometimes "we" send emails to a domain where the primary MX record does not resolve. I would have expected that sendmail would just try the next but instead it resolves to mxrecord.name.OURDOMAIN.COM (I think) - it seams it appends our domain and then tries this server and this server says "no thanks" so the delivery fails.

I tried to lookup the MX myself using the same nameserver as the mailscanner server is using - this fails so its not the DNS server that appends something to make it resolveable or gives out a standard IP.

I also checked the resolve file to check that there is not search setting that would make it search our domain for a valid IP/lookup.

how can I stop this behavior and make it try the next MX in line?

best regards

Hoople Ltd, Registered in England and Wales No. 7556595
Registered office: Plough Lane, Hereford, HR4 0LE

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