What is --------> src="cid:

[megan88]

I was looking at the code of an email I got and came across this: src="cid:
I spent about an hour looking it up on the internet and still could not figure out what it is. It has something to do with the image source, I am very confused.

 

[adam0101]

What's the whole image tag look like?

 

[megan88]

<TD><IMG alt=WorkPlaceDiversity
src=&quot;cid:3209529399-220036513505056225561@DIVERSITY02&quot; border=0></TD>
<TD align=right>&nbsp;<BR><B>WorkPlaceDiversity's Resume Distribution
Service
<P>E-mail Your Resume to 1000's of Recruiters!</P></B></TD>
<TD><IMG height=1 alt=&quot;&quot;
src=&quot;cid:599629400-220036513505056225562@DIVERSITY02&quot; width=20
border=0></TD></TR>
<TR>
<TD colSpan=3><IMG height=4 alt=&quot;&quot;
src=&quot;cid:2359229401-220036513505056225563@DIVERSITY02&quot; width=1
border=0></TD></TR>

 

[EdwardMartinIII]

Er, Class ID, I think.

Cheers,


Edward

&quot;Cut a hole in the door. Hang a flap. Criminy, why didn't I think of this earlier?!&quot; -- inventor of the cat door

 

[adam0101]

Is the e-mail client Microsoft Outlook? My guess would be that when an image is added to an e-mail, Outlook renames it to this unique identifier so if two e-mails have two images of the same name, they won't get mixed up. Just a guess though. You can get more info on unique identifiers by searching for &quot;cuid&quot; or &quot;guid&quot; or &quot;cid identifier&quot; on google.

 

[megan88]

I know but in the code, of the html email, where usually the ip address of where to call the images is is this cid, I am trying to figure out where it is calling the images from.
I could forward someone the email if they want to look at it.
Why I want to know this is that I often send out html emails for advertising to clients and if a client saves the email say to his desk top and then trys to send it again it screws up where the images are called from and I thought that maybe this cid thingy is a way around that.

 

[zoobie]

Adam guessed correctly. It's a random identifier to said file. Email isn't send directly my friend...You'll soon find out it's very difficult to setup. Just hotlink any images you may have with a full URL. If you're wanting the receiver to forward with said file(s), each client handles this differently...not to mention web-based email. After you think your're all setup, you're off to AOL with it's 30 million users which uses a completely different set of handling. If you think you're simply going setup and go, you are very sadly mistaken.

Welcome to the wonderful world of email!

 

[megan88]

SO DOES IT CHANGE THE LOCATION NAME OF WHERE THE IMAGES COME FROM? When it was first sent did the images have an ip address?

 

[zoobie]

No...It was included in the email.