Re: Timeout of SMTP servers

2010-01-23 Thread Martijn de Munnik

On Jan 23, 2010, at 4:24 PM, Sahil Tandon wrote:

 On Fri, 22 Jan 2010, Martijn de Munnik wrote:
 
 RFC2821 section 4.5.3.2 Timeouts reads
 
 An SMTP server SHOULD have a timeout of at least 5 minutes while it
 is awaiting the next command from the sender.
 
 The key word is SHOULD, as opposed to MUST.

SHOULD equals MUST unless you have a really good reason. I'm trying to 
figure out if somebody on the list knows a really good reason.
 
 When I try to connect to an one.com mx (mx-cluster1.one.com or
 mx-cluster2.one.com) I notice they will close the connection after about 3
 seconds. Why do they do this? Is anybody else using such short timeouts?
 
 That timeout does seem foolishly short, but they might have legitimate
 reasons that are best explained by ... them!  Try pinging their
 postmaster.
 
 -- 
 Sahil Tandon sa...@tandon.net
 



Re: Timeout of SMTP servers

2010-01-23 Thread Wietse Venema
Martijn de Munnik:
 
 On Jan 23, 2010, at 4:24 PM, Sahil Tandon wrote:
 
  On Fri, 22 Jan 2010, Martijn de Munnik wrote:
  
  RFC2821 section 4.5.3.2 Timeouts reads
  
  An SMTP server SHOULD have a timeout of at least 5 minutes while it
  is awaiting the next command from the sender.
  
  The key word is SHOULD, as opposed to MUST.
 
 SHOULD equals MUST unless you have a really good reason. I'm
 trying to figure out if somebody on the list knows a really good
 reason.

Ask THEIR postmaster.

Wietse


Re: Timeout of SMTP servers

2010-01-23 Thread Sahil Tandon
On Sat, 23 Jan 2010, Martijn de Munnik wrote:

 On Jan 23, 2010, at 4:24 PM, Sahil Tandon wrote:
 
  On Fri, 22 Jan 2010, Martijn de Munnik wrote:
  
  RFC2821 section 4.5.3.2 Timeouts reads
  
  An SMTP server SHOULD have a timeout of at least 5 minutes while
  it is awaiting the next command from the sender.
  
  The key word is SHOULD, as opposed to MUST.
 
 SHOULD equals MUST unless you have a really good reason. I'm
 trying to figure out if somebody on the list knows a really good
 reason.

*yawn*.  Perhaps you will benefit from repetition: ask their postmaster,
as I advised in my initial response and others have since echoed.

-- 
Sahil Tandon sa...@tandon.net


Re: Timeout of SMTP servers

2010-01-23 Thread LuKreme
On Jan 23, 2010, at 9:17, Martijn de Munnik mart...@youngguns.nl  
wrote:
SHOULD equals MUST unless you have a really good reason. I'm  
trying to figure out if somebody on the list knows a really good  
reason.


There is no really good reason for a 3 second timeout in a public  
server. There are really good reason for having a timeout less than 5  
minutes though.