Sendmail / Email not sent to some domains

[6thirty]

Hi,

 

I've seen this problem elsewhere on this forum without any fixes, so I thought I would throw it back open.

 

The problem is this:

 

Emails being sent from the site do not get received by some domains. Ones I know of are AOL, Lycos.co.uk and Pipex. Others work fine.

I tried the email test contribution (http://www.oscommerce.com/community/contributions,1595) and got the same results.

 

However, the plot thickens - if I send mail from Outlook using one of our domain email accounts it does send to the problem domains.

I thought this may be a sendmail issue, so I changed the transport method to SMTP in admin>configuration>email options, but still no joy.

 

Can someone please, for the love of all that is good, help me :(

 

Cheers

[MarcoZorro]

Sounds like the mails are getting killed by an automated spam system.

[6thirty]

That was my first thought, but why do they get through when I send then from Outlook?

 

They are going from the same mail server, so you would expect them to get blocked too.

[6thirty]

Does anyone else have any idea? I'm getting kind of desperate here :blink:

[MarcoZorro]

They are going from the same mail server, so you would expect them to get blocked too.

<{POST_SNAPBACK}>

 

The email headers sent via outlook and the email headers sent from the php script are different.

 

Since spam filters use these headers to determine if a message should be classed as spam or not its likely that the headers not sent via the php script causes it to fail.

 

What you need to do is compare the headers sent when you send an email from outlook and the headers sent when the php script sends an email and you will see the difference.

[6thirty]

The only real difference is that there is an extra "Received from" when it comes from the site and the return path is to [email protected] instead of [email protected].