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UNIX for Advanced & Expert Users
Backup problem---Again
Post 19524 by lealyz on Friday 12th of April 2002 03:38:41 AM
04-12-2002
mail server
Hi,
i am using a mail server software called Post.Office intermail v 3.5.3
Post.Office intermail requires that sendmail be disabled to work...so i am not using sendmail. I am using SMTP (25) and POP3 (110).
The problem with my mail server is that i am currently not sending mails....my user accounts cannot send mail but they can receive mails.
I configured my outlook express with an existing account on my server and when i tried sending mail to my hotmail and yahoo accounts ( or anywhere else) i get this message;
An unknown error has occurred. Subject 'Fw:Test Mail', Account: 'demo', Server: 'mydomain.com', Protocol: SMTP, Server Response: '452 Couldn't process control file', Port: 25, Secure(SSL): No, Server Error: 452, Error Number: 0x800CCC6C
Meanwhile, when i checked the queue log of my post.office ssoftware, there was a long queue of outgoing mails and there were two types of error messages for the bulk ofthem;
1. MX lookup failure
2. Couldn't establish SMTP connection on port 25
Now i tested 1. by checking my resolv.conf file, all entries were ok. I was even able to perform an nslookup of serveral domains on the mail server using one of the dns entries in resolv.conf.
I dont understand why i had error 2, though.
For reference, note: i have a microsoft exchange server that relays it's mails thru my post.office mail server. The users on the exchange server have no problems sending or receiving mails.Users on the post.office use @mydomain.com while users on exchange use @mydomain.net.
Rather complex senario.
i am using a mail server software called Post.Office intermail v 3.5.3
Post.Office intermail requires that sendmail be disabled to work...so i am not using sendmail. I am using SMTP (25) and POP3 (110).
The problem with my mail server is that i am currently not sending mails....my user accounts cannot send mail but they can receive mails.
I configured my outlook express with an existing account on my server and when i tried sending mail to my hotmail and yahoo accounts ( or anywhere else) i get this message;
An unknown error has occurred. Subject 'Fw:Test Mail', Account: 'demo', Server: 'mydomain.com', Protocol: SMTP, Server Response: '452 Couldn't process control file', Port: 25, Secure(SSL): No, Server Error: 452, Error Number: 0x800CCC6C
Meanwhile, when i checked the queue log of my post.office ssoftware, there was a long queue of outgoing mails and there were two types of error messages for the bulk ofthem;
1. MX lookup failure
2. Couldn't establish SMTP connection on port 25
Now i tested 1. by checking my resolv.conf file, all entries were ok. I was even able to perform an nslookup of serveral domains on the mail server using one of the dns entries in resolv.conf.
I dont understand why i had error 2, though.
For reference, note: i have a microsoft exchange server that relays it's mails thru my post.office mail server. The users on the exchange server have no problems sending or receiving mails.Users on the post.office use @mydomain.com while users on exchange use @mydomain.net.
Rather complex senario.
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LEARN ABOUT ULTRIX
mconnect
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)