bornonline

Well-Known Member
Nov 19, 2004
139
0
166
Earth
Hi,

I'm getting complaints that a customer cannot receive attachments from a certain domain. This is what they said when they try and send the email. This same domain receives attachments all day and only seems to be a problem when coming from these people.

This box does have the ConfigServer mailscanner setup on it with CSF firewall. I have not had any issues until they complained about not receiving attachments from these people. This same domain has received over 600 emails today many with attachments, but this problem is persistant when attachments are coming from this one sender it seems.

I tried searching the forum, but could not really find anything. The error looks obvious from what they sent, but I'm just not so sure that my Exim config is to blame.
Anyone have any ideas?

From the people trying to send attachment
We connect to their mail gateway - ACCEPTED
Told their gateway who we are - ACCEPTED
Told their gateway who the mail was from - ACCEPTED
Told their gateway who the mail is for - ACCEPTED
Send the data - body and attachment(s) - TIMES OUT

It appears that there might be a timeout issue involved in sending this file. Our
suggestion is if they are running sendmail is to increase their data delivery
timeout:
O Timeout.datafinal=???? The AJC has it's timeout set to 30m. This is to allow
sites with slow Internet connections time to send large files without timing out.

Code:
Connecting to   
domain1.com. via esmtp... 
220-host2.domain1.com ESMTP Exim 4.52 #1 Thu, 21 Sep 2006 12:34:59   
-0500 
220-We do not authorize the use of this system to transport unsolicited, 
220 and/or bulk e-mail. 
 >>> EHLO mail.domain2.com 
250-host2.domain1.com Hello mail.domain2.com [169.x.x.x] 
250-SIZE 52428800 
250-PIPELINING 
250-AUTH PLAIN LOGIN 
250-STARTTLS 
250 HELP 
 >>> MAIL From:<[email protected]> SIZE=2290163 
250 OK 
 >>> RCPT To:<[email protected]> 
 >>> RCPT To:<[email protected]> 
 >>> RCPT To:<[email protected]> 
 >>> RCPT To:<[email protected]> 
 >>> DATA 
250 Accepted 
250 Accepted 
250 Accepted 
250 Accepted 
354 Enter message, ending with "." on a line by itself 
[B]timeout writing message to domain1.: Resource temporarily   
unavailable [/B]
<[email protected]>,<[email protected]>,<[email protected]>,<[email protected]>... Deferred 
Closing connection to domain1.com