[SASAG] Decipher Exchange SMTP Logs

Eric Kahklen eric at kahklen.com
Mon Jan 26 14:10:30 PST 2009

I just tried that and the SIZE was the same (1048576).


> One simple way to do this is to telnet to that server on port 25 and
> issue the "ehlo" command  (extended hello). The server will respond with
> its support capabilities including one called SIZE.
> Eric Kahklen wrote:
>>We are having a problem where an attachment over 1 MB is being denied by
>>the destination mail server.  They have told me they are not limiting
>>incoming email size.  They are able to receive email with an attachment
>>less than 1 MB from my users.  I've sent the same attachment from my
>>personal email account that is not using Exchange and have not yet
>>received a bound message yet, but have not heard from them if they got
>> the
>>message.  Is there a way to know what their mail server's message size
>>limits are? My smtp logs show <, 250 SIZE 1048576 which should be 1 MB.
>>Any suggestions would be appreciated.

Eric Kahklen
Mountlake Terrace, WA

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