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Full Discussion: Tcp waits
Operating Systems Linux SuSE Tcp waits Post 302961759 by bakunin on Thursday 3rd of December 2015 08:44:08 AM
Old 12-03-2015
OK, the picture is clearer now, but still not entirely conclusive:

Quote:
Originally Posted by Phuti
and I always see one connection from smpt I see one and it takes about 10-15 minutes.
I suppose by "smpt" you mean "SMTP", which is "Simple Mail Transfer Protocol". This is a specialized protocol (based on the TCP protocol as a means of transport) to transport mails between a client and the MTA as well as between MTAs. (If you cannot make sense of the term MTA: here is a short introduction).

If you maintain an Exchange Server (which is a software as close to a real MTA as Microsoft was able to program it) it perhaps uses SMTP transmissions to send and/or receive mails, both locally and to/from outside. Depending on the volume of data to send may or may not take several minutes to do so.

How about describing your environment and your problem a bit more completely so that we can provide concrete help instead of giving you some general information, hm?

I hope this helps.

bakunin
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mconnect(1)                                                        User Commands                                                       mconnect(1)

NAME
mconnect - connect to SMTP mail server socket SYNOPSIS
mconnect [-p port] [-r] [hostname] DESCRIPTION
The mconnect utility opens a connection to the mail server on a given host, so that it can be tested independently of all other mail soft- ware. If no host is given, the connection is made to the local host. Servers expect to speak the Simple Mail Transfer Protocol (SMTP) on this connection. Exit by typing the quit command. Typing EOF sends an end of file to the server. An interrupt closes the connection immedi- ately and exits. OPTIONS
The following options are supported: -p port Specify the port number instead of the default SMTP port (number 25) as the next argument. -r "Raw" mode: disable the default line buffering and input handling. This produces an effect similar to telnet(1) to port number 25. OPERANDS
The following operand is supported: hostname The name of a given host. USAGE
The mconnect command is IPv6-enabled. See ip6(7P). FILES
/etc/mail/sendmail.hf help file for SMTP commands ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
telnet(1), sendmail(1M), attributes(5), ip6(7P) Postel, Jonathan B., RFC 821, Simple Mail Transfer Protocol, Information Sciences Institute, University of Southern California, August 1982. SunOS 5.10 9 Nov 1999 mconnect(1)
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