set sender to ..@... using -f?

[Jeff]

I received a suspicious email and when I looked at its Properties I found
the following warning:
.....set sender to xxx@xxxx using -f

What does "-f" mean?

Thanks.

--

Jeff McPherson
Email address deliberately false to avoid spam
(e-mail address removed)
Outgoing mail is certified Virus Free by AVG

 

[Carey Frisch [MVP]]

Any "suspicious" email should be immediately deleted as it may
have a virus attachment.

For expert Outlook Express advice:

Please visit the experts in the Outlook Express newsgroup:
news://msnews.microsoft.com/microsoft.public.windows.inetexplorer.ie6_outlookexpress

--
Carey Frisch
Microsoft MVP
Windows XP - Shell/User

Be Smart! Protect your PC!
http://www.microsoft.com/security/protect/

--------------------------------------------------------------------------------------


| I received a suspicious email and when I looked at its Properties I found
| the following warning:
| ....set sender to xxx@xxxx using -f
|
| What does "-f" mean?
|
| Thanks.
|
| --
|
| Jeff McPherson

 

[Parish]

I received a suspicious email and when I looked at its Properties I found
the following warning:
....set sender to xxx@xxxx using -f

What does "-f" mean?

That message looks like it was generated by Sendmail (the sender's
(Unix) MTA). It's not really suspicious in itself (but if the whole
message is suspect...) as it happens when Sendmail translates local
usernames/addresses to public ones.

Here's an example from a test message I sent whilst setting up Sendmail:

X-Authentication-Warning: parish.my.domain: mark set sender to
(e-mail address removed) using -f

(I've change my real e-mail address in this post)

 

[Jeff]

Thanks.

--

Jeff McPherson
Email address deliberately false to avoid spam
(e-mail address removed)
Outgoing mail is certified Virus Free by AVG