Can't send PDF attachments - Solved

[Sruli Saurymper]

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!

On 11/02/15 21:23, Sruli Saurymper wrote:
> Hi all,
> I urgently need some help with my following problem,
>
> 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)
>
> I attach the log of 1 smtp session (IP and email addressed replaced 
> with dummy details)
>
> In my postqueue i see this (3 different email attempts);
>
> 38D3918004A21   981561 Wed Feb 11 20:09:56 myname at mydomain.com
> (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)
>                                          mygmailaccount at gmail.com
>
> 2F5B218004A1E   981561 Wed Feb 11 19:48:35  myname at mydomain.com
> (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)
>                                          mygmailaccount at gmail.com
>
> 76A8218004A1F   981561 Wed Feb 11 20:04:33  myname at mydomain.com
> (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)
>                                          mygmailaccount at gmail.com
>
> Please can someone help me out with this problem.
>
> Many Thanks
> Sruli
>
>
>
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