sendmail on FreeBSD


 
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Operating Systems BSD sendmail on FreeBSD
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Old 01-24-2006
sendmail on FreeBSD

Dear all,

I have been using freebsd 5.4 for 2 months using fetchmail to retrieve mails and using sendmail to send mails.
I have no problem with fetchmail to retrieve mails from pop3 server.
And most of the time I have no problem with sendmail.
But recently I found that I could not send mails to freebsd-stable@freebsd.org.
Actually sendmail is a mail server (not a client), which sends mails directly from my host to other mail servers without relaying and SMTP is a server-to-server protocol, which requires reverse DNS to gain full functionality.
Correct me, if I'm wrong.
I found that rDNS was not supported to the given IP address and PTR record was not found (I don't know so much about them).
So my sendmail can not work with some destination servers.
How to config rDNS? Shall I call ISP?
Does relay help me solve this problem? And how to config it?

More info: I'm on dual stack; dynamic IPv4 and static IPv6 (6bone).
Somebody who experienced this problem please point me out.

Thanks in advance,
Jaguar
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mailstats(8)						      System Manager's Manual						      mailstats(8)

NAME
mailstats - Displays statistics about mail traffic SYNOPSIS
mailstats [-o] [-C cffile [-f stfile] FLAGS
Do not display the name of the mailer in the output. Use cffile as the name of the sendmail "cf" file instead of /var/adm/sendmail/send- mail.cf. Use stfile as the input statistics file instead of /var/adm/sendmail/sendmail.st. DESCRIPTION
The mailstats command reads the information in the /var/adm/sendmail/sendmail.st file (or in the file specified with the -f flag), formats it, and writes it to standard output. Note also that you can change the location of the sendmail.st file by editing its pathname in the sendmail.cf file. EXAMPLES
The format of the information is shown in the following example, in which the first field (M) contains a number that indicates the position of that mailer in the sendmail.cf file, starting at 0 (zero). For example, the first mailer in the sendmail.cf file corresponds to the number 0 in the mailstats display, the second mailer corresponds to the number 1, and so on. Statistics from Thu Feb 17 11:20:01 2000 M msgsfr bytes_from msgsto bytes_to msgsrej msgsdis Mailer 1 50 77K 1 3K 0 0 local 6 43 59K 58 99K 0 0 smtp ============================================================ T 93 136K 59 102K 0 0 The fields in the report have the following meanings: Indicates the position of the mailer in the sendmail.cf file. Indicates the number of messages received by the local machine from the indicated mailer. Indicates the number of bytes in the messages received by the local machine from the indicated mailer. Indicates the number of messages sent from the local machine using the indicated mailer. Indicates the number of bytes in the messages sent from the local machine using the indicated mailer. Indicates the number of rejected messages. Indicates the number of discarded messages. Indicates the name of the mailer. If sendmail transmits mail directly to a file, such as the dead.letter file or an alias target, the message and byte counts are credited to the prog mailer, as defined in the sendmail.cf file. However, mailstats will still default to var/adm/sendmail/sendmail.st. FILES
Specifies the command path Contains system statistics Contains configuration information for sendmail RELATED INFORMATION
Commands: sendmail(8) delim off mailstats(8)