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1answer
78 views

Where does e-mail header “Received: from…” come from? [closed]

I sent myself an e-mail from my server to my gmail account, here is one of the headers (partially redacted): Received: from cpvds3xx.xxx.com (dev1.xxx.com. [209.51.132.xxx]) by mx.google.com ...
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0answers
30 views

How to configure Postfix to only send out emails with a certain header?

I'm setting up a local development VM and I was able to redirect all sent out emails to a local mailbox using virtual_alias_maps with the entry /.*/ username. What I'd like to add is an option to not ...
0
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1answer
65 views

userID and hostname are included in the email header

Running Debian wheezy, I have exim4 configured to use smarthost smtp.gmail.com::587 My Google Apps email address and password are configured in /etc/exim4/passwd.client and mail is being sent OK... ...
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votes
1answer
69 views

Are SMTP headers retained when an email is forwarded or replied to? [duplicate]

Let's say an email is sent from party A to B. Let's refer to the set of headers that B views as Headers 1. Party B then replies to or forwards the email to party C. Let's refer to the set of ...
-1
votes
2answers
138 views

localhost [127.0.0.1] in email headers

I'm using sendmail to send a very simple email from a text file. Here is the text file: to:test@someaddress.com from:admin@hostname.tld subject:Testing test test test Which I send with: sendmail ...
3
votes
2answers
106 views

Is it possible for a spammer to tamper with the received time of an email?

I received some spam on gmail and I am wondering if I can fully trust the received time that gmail is displaying. Can the spammer tamper with that at all or is that attached to the headers by the ...
0
votes
3answers
158 views

Is HTML content permitted in email header values?

In the process of troubleshooting an email message display issue, I noticed that an email header contained HTML. Example: From: <bob@foo.com> To: <john@foo2.com> Date: 11 Feb 13 ...