SMTP Error message...

[Daveyd123]

Our website is hosted by an EXTERNAL company.

When I user forgets their password, they click on a link. After the link is clicked, it automatically generates an email and sends it to me.

Everything has been working fine except for the last couple of weeks. When an email is sent form our remote hosting site about a forgotten password, I receive the following email...

Your message did not reach some or all of the intended recipients.

Subject: Forgotten Password Request

Sent: 3/28/2006 8:14 AM

The following recipient(s) could not be reached:

Mr. Bigglesworth on 3/28/2006 8:14 AM

There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.

<blah-blah #5.5.0 smtp;553 Terminating connection as the sender is spoofed.>



Any ideas?

 

[Daveyd123]

anyone?

 

[boryan]

I recently had a similar issue with just certain emails being bounced back and it had a variety of messages, but it always was an SMTP error and then a DNS error. Our largest local ISP (comcast) had just instituted reverse DNS lookup apparently without telling a soul. So since it couldn't do a lookup on our system, everything sent to anyone at a comcast address was bounced back. We called our ISP and asked them to allow a reverse DNS lookup and since then everything's fine. It might be worth a try.