Solved

Exchange 2003 SP2, SPF issue when sending mail

Posted on 2010-11-17
3
473 Views
Last Modified: 2012-05-10
Hello

I get this error when sending to one particular recipient (thousands of others work fine!!)

#5.5.0 smtp;550 Your email was rejected due to an SPF issue. Either your SPF is validating that you are sending from an un-authorised SMTP server or your SPF record is corrupt (#5.7.1)

I read somewhere that it could be the PTR records in DNS being incorrectly configured, but I'm not sure if this is the case.

any ideas?

thanks,
0
Comment
Question by:EffEffTee
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 8

Expert Comment

by:jfletchster
ID: 34154967
You need to check the DNS config of your sending domain, if you manage this on your own servers or with a 3rd party hosting company. In the case of a 3rd party hosting company then they should give you an option in your DNS management to configure SPF records.
Some Spam filters require fully valid SPF records associated to a domain.
Use this website to generate a SPF record that is valid
http://old.openspf.org/wizard.html
0
 

Author Comment

by:EffEffTee
ID: 34154982
I manage DNS internally.  

Would it make any difference if we were using a smart host?
0
 
LVL 8

Accepted Solution

by:
jfletchster earned 500 total points
ID: 34155038
Well the smart host needs to be allowed to send emails on your behalf which is what the SPF states.
SPF records are added using a TXT record. If you have a look at the website i have linked you will be able to choose the record you need.

http://old.openspf.org/dns.html?mydomain=example.co.uk&deny=softdeny
Look under the section;
"If other machines in the domain also send mail, designate them."
"If any other machines not in the domain also send mail from that domain, designate them."
"Each of your mail servers should have an SPF record also."
0

Featured Post

 [eBook] Windows Nano Server

Download this FREE eBook and learn all you need to get started with Windows Nano Server, including deployment options, remote management
and troubleshooting tips and tricks

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Unified and professional email signatures help maintain a consistent company brand image to the outside world. This article shows how to create an email signature in Exchange Server 2010 using a transport rule and how to overcome native limitations …
Check out this step-by-step guide for using the newly updated Experts Exchange mobile app—released on May 30.
In this video we show how to create a mailbox database in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Servers >> Data…
how to add IIS SMTP to handle application/Scanner relays into office 365.
Suggested Courses

630 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question