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Turns out it was the spam blocker on my untangle FW, even though it
showed in the FW log as passed when I disable scan SMTP for spam all
works!<br>
<br>
<div class="moz-cite-prefix">On 11/02/15 21:23, Sruli Saurymper
wrote:<br>
</div>
<blockquote cite="mid:54DBC83A.5080406@saurymper.com" type="cite">Hi
all,
<br>
I urgently need some help with my following problem,
<br>
<br>
I have a newly setup live instance of kolab 3.3 on centos 7
multi-domain all seems to work fine, but one weird and urgent
issue, whenever someone sends a PDF attachment postfix reports a
time-out when trying to connect to the remote server, when sending
to local addresses it goes through fine, only remote addresses
seem to be the problem and all other attachment types I tried so
far work fine (I tried dozens of different PDF files, all same
problem, size ranging from 10kb to 10MB, other file types work
upto 20MB)
<br>
<br>
I attach the log of 1 smtp session (IP and email addressed
replaced with dummy details)
<br>
<br>
In my postqueue i see this (3 different email attempts);
<br>
<br>
38D3918004A21 981561 Wed Feb 11 20:09:56 <a class="moz-txt-link-abbreviated" href="mailto:myname@mydomain.com">myname@mydomain.com</a>
<br>
(conversation with alt1.gmail-smtp-in.l.google.com[173.194.71.27]
timed out while sending end of data -- message may be sent more
than once)
<br>
<a class="moz-txt-link-abbreviated" href="mailto:mygmailaccount@gmail.com">mygmailaccount@gmail.com</a>
<br>
<br>
2F5B218004A1E 981561 Wed Feb 11 19:48:35 <a class="moz-txt-link-abbreviated" href="mailto:myname@mydomain.com">myname@mydomain.com</a>
<br>
(delivery temporarily suspended: conversation with
alt1.gmail-smtp-in.l.google.com[173.194.71.27] timed out while
sending end of data -- message may be sent more than once)
<br>
<a class="moz-txt-link-abbreviated" href="mailto:mygmailaccount@gmail.com">mygmailaccount@gmail.com</a>
<br>
<br>
76A8218004A1F 981561 Wed Feb 11 20:04:33 <a class="moz-txt-link-abbreviated" href="mailto:myname@mydomain.com">myname@mydomain.com</a>
<br>
(conversation with alt1.gmail-smtp-in.l.google.com[173.194.71.27]
timed out while sending end of data -- message may be sent more
than once)
<br>
<a class="moz-txt-link-abbreviated" href="mailto:mygmailaccount@gmail.com">mygmailaccount@gmail.com</a>
<br>
<br>
Please can someone help me out with this problem.
<br>
<br>
Many Thanks
<br>
Sruli
<br>
<br>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
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</blockquote>
<br>
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