Outbound e-mail through MailScanner : JPG gets corrupted.

[Mark Meelhuysen]

For testing purposes i changed the VPN tunnel between the 2 locations from L2TP AES-HA1 on both ends to simple PPTP, to ensure the tunnel is not the bottleneck on this. The images are still corrupted when received.
When i create a new send connector that makes sure that for the particular domain the mail is delivered to the ISP smarthost the images arrive fine.

Van: MailScanner [mailto:mailscanner-bounces+mark=meelhuysen.com at lists.mailscanner.info] Namens Alex Neuman van der Hans
Verzonden: maandag 30 mei 2016 15:49
Aan: MailScanner discussion <mailscanner at lists.mailscanner.info>
Onderwerp: Re: Outbound e-mail through MailScanner : JPG gets corrupted.

Make MailScanner send the resulting e-mail message to an account outside the Exchange server using mailertable, virtusertable or other means. This would determine if it’s MailScanner’s interaction with Exchange which is mangling things.

Is there anything “in front of” the Exchange server? Like a barracuda box or something?

Also, you can make MailScanner “keep” the message as a local message. Read it back. This would exclude MailScanner’s interaction with anybody else.

You can also temporarily “scan messages = no” to see if it’s something like a broken module somewhere.

My guess it’s either a network issue (connections being dropped mid-transfer) or Exchange being a tool. In a bad way.

On May 30, 2016, at 8:43 AM, Mark Meelhuysen <mark at meelhuysen.com<mailto:mark at meelhuysen.com>> wrote:

They differ. See attachment (hope that works, sorry if it doesnt)
What i notice is that the same picture suddenly has a different name. I send multiple JPG’s and it appears that the system “hussels” the filenames? When i compare send and received pictures one of the received pictures suddenly has the file name of another picture.. Very strange.. You can see it in the attached screenshot…

Thank you for your reaction.

Mark

Van: MailScanner [mailto:mailscanner-bounces+mark=meelhuysen.com at lists.mailscanner.info] Namens Alex Neuman van der Hans
Verzonden: maandag 30 mei 2016 15:18
Aan: MailScanner discussion <mailscanner at lists.mailscanner.info<mailto:mailscanner at lists.mailscanner.info>>
Onderwerp: Re: Outbound e-mail through MailScanner : JPG gets corrupted.

What do the MD5sums show?
Is Exchange 2013 installed on top of a previous version? I’ve seen cases where old settings such as “send as RTF” and “use WINMAIL.DAT” screw things up.

On May 30, 2016, at 6:44 AM, Mark Meelhuysen <mark at meelhuysen.com<mailto:mark at meelhuysen.com>> wrote:

JPG files are still received in good condition, but when we send them out, the files received by the other party are all corrupted. It differs from completely grey to half visible images.



--
Dit bericht is gescanned op virussen en andere gevaarlijke inhoud en lijkt schoon te zijn.
Meelhuysen IT Solutions<http://www.meelhuysen.com/>.

--
Dit bericht is gescanned op virussen en andere gevaarlijke inhoud en lijkt schoon te zijn.
Meelhuysen IT Solutions<http://www.meelhuysen.com/>. <MD5.PNG>

--
MailScanner mailing list
mailscanner at lists.mailscanner.info<mailto:mailscanner at lists.mailscanner.info>
http://lists.mailscanner.info/listinfo/mailscanner


--
Dit bericht is gescanned op virussen en andere gevaarlijke inhoud en lijkt schoon te zijn.
Meelhuysen IT Solutions<http://www.meelhuysen.com/>.

-------------- 
Dit bericht is gescanned op virussen en andere gevaarlijke inhoud en lijkt schoon te zijn.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mailscanner.info/pipermail/mailscanner/attachments/20160530/7adfe204/attachment.html>