hping has such horrible documentation and seemingly many different types of syntaxes.
I would like to know what the hping command would be to send a TCP packet with a source IP of 192.168.0.2, a source port of 9455, a destination IP of 192.168.0.1, a destination port of 80, and a payload file named "payload.txt".
I can get by with knowing this, but if you know of a good tutorial for hping (which I'm not sure exists), I could use that too.
Some users on my domain use a Blackberry for email. Should Blackberry's servers be included somehow in my SPF record?
Thank you much for any advice.
I use Google Apps with my domain.
Recently, we have begun to receive spam that gets past Google's spam filters. They are from our own email addresses.
I am wondering how to prevent this kind of email spoofing.
We use an SPF record with the "~all" setting. I'm wondering if I can upgrade that to "-all". However, Google Apps recommends against it. Also, I'm not 100% sure that our SPF record is complete.
Any suggestions?
Thank you ever so much.
I'm completely new to Stack Overflow, so Hi!
I need to add an SPF record to my site "main.com" (not the real address) to allow an email publishing company "emailpublishers.com" (not the real address) to send emails on my behalf. However, I'm nervous about adding an SPF record because of the havoc it could wreak if done incorrectly.
I use Google Apps. I also use "auxiliary.com" to send mail from "main.com." And, of course, I use "main.com" to send mail as well. "auxiliary.com" doesn't have an SPF record.
I used Microsofts' and OpenSPF's wizards to generate the following SPF entry. Does it seem to be correct for me?
"v=spf1 a mx ip4:55.55.555.55 mx:alt1.aspmx.l.google.com mx:alt2.aspmx.l.google.com mx:aspmx.l.google.com mx:aspmx2.googlemail.com mx:aspmx3.googlemail.com mx:aspmx4.googlemail.com mx:aspmx5.googlemail.com a:auxiliary.com include:_spf.google.com include:auxiliary.com mx:auxiliary.com include:emailpublishers.com mx:emailpublishers.com ~all"
However, my host MediaTemple says in a knowledge base article to use:
v=spf1 a:main.com/20 ~all
So that added to my confusion.
Thanks a lot!