0
votes
0answers
185 views

553-Message filtered - HELO Name issue?

I am having major issues sending from my SBS2011 machine to Message labs server-13.tower-134.messagelabs.com #553-Message filtered. Refer to the Troubleshooting page at ...
0
votes
1answer
128 views

Spam sent from fake email accounts on my domain [duplicate]

One of my clients is getting thousands of "Delivery Status Notification (Failure)" emails per day and it's replied to random email accounts that don't exist on the domain. The content of the emails ...
0
votes
1answer
3k views

Gmail is blocking email from my application server

I'm getting the following in my mail logs on my app server: 550-5.7.1 [67.23.15.78] The IP you're using to send mail is not authorized to 550-5.7.1 send email directly to our servers. Please use ...
1
vote
2answers
142 views

Is there a common X-Header for RFC 2821 “MAIL FROM”? Should it be DKIM signed?

w.r.t. the difference between RFC2821 MAIL From and RFC2822 FROM I'm considering having my MTA add a header specifying what was sent in the MAIL FROM portion of the envelope. The RFC2821 header is ...
2
votes
1answer
67 views

Understanding the many “FROM” addresses that apply to SenderID, DKIM, and SPF

Can someone tell me when and why a client, MTA relay, Unix .Forward, anonymous relay, or listserver will create, or alter these headers: Resent-Sender: Resent-From: Sender: From: If you can please ...
3
votes
1answer
783 views

SPF problems with Google Apps

I currently have an SPF record with a hostname of @ that is: v=spf1 mx ip4:x.x.x.243/32 include:_spf.google.com include:amazonses.com ~all I also have another record of" spf2.0/pra mx ...
3
votes
6answers
3k views

Hotmail and Live.com rejecting all emails

I have been having problems sending emails from my server to hotmail.com and live.com email addresses. I have read other posts on serverfault but they have not been helpful. Here is the error message. ...
2
votes
1answer
349 views

Is a soft SPF fail bad?

Received-SPF: softfail (google.com: domain of transitioning user@domain.com does not designate XXX.XX.XXX.XXX as permitted sender) client-ip=XXX.XX.XXX.XXX; Authentication-Results: mx.google.com; ...