Hello everyone, I am using postfix 2.5.4 with amavisd-new, courier imap, clamd, spamassasin, maildrop on Ubuntu 6.06.2 LTS server which I inherited. I have been struggling alone to try to resolve two issues and hope that i can get some help here. Issue 1. Many of my users have been encountering smtp time outs and delays (most are using thunderbird latest version) . Most of the time smtp is very responsive but at times there are these delays of 10-30 seconds and sometimes the connection times out. delays occur on both port 25 and 587. I have noted that smtp processes are not at maximum during these times, also there is more than enough memory on the server. default_process_limit = 100
I have read over http://postfix.mirrorspace.org/STRESS_README.html and checked my main.cf and master.cf to see if I could change some settings but all seams to check out. Here is my main.cf # Postfix master process configuration file. For details on the format# of the file, see the Postfix master(5) manual page.## ==========================================================================# service type private unpriv chroot wakeup maxproc command + args# (yes) (yes) (yes) (never) (100)# ==========================================================================smtp inet n - - - - smtpd#submission inet n - - - - smtpd# -o smtpd_etrn_restrictions=reject# -o smtpd_client_restrictions=permit_sasl_authenticated,rejectsmtps inet n - n - - smtpd -o smtpd_tls_wrappermode=yes -o smtpd_sasl_auth_enable=yes#submission inet n - - - - smtpd# -o smtpd_etrn_restrictions=reject# -o smtpd_enforce_tls=yes -o smtpd_sasl_auth_enable=yes#628 inet n - - - - qmqpd587 inet n - - - - smtpd -o smtpd_sasl_auth_enable=yespickup fifo n - - 60 1 pickup -o content_filter= -o receive_override_options=no_header_body_checkscleanup unix n - - - 0 cleanupqmgr fifo n - - 300 1 qmgr#qmgr fifo n - - 300 1 oqmgr#tlsmgr unix - - - 1000? 1 tlsmgrtlsmgr unix - - n 300 1 tlsmgrrewrite unix - - - - - trivial-rewritebounce unix - - - - 0 bouncedefer unix - - - - 0 bouncetrace unix - - - - 0 bounceverify unix - - - - 1 verifyflush unix n - - 1000? 0 flushproxymap unix - - n - - proxymapsmtp unix - - - - - smtp# When relaying mail as backup MX, disable fallback_relay to avoid MX loopsrelay unix - - - - - smtp -o fallback_relay=# -o smtp_helo_timeout=5 -o smtp_connect_timeout=5showq unix n - - - - showqerror unix - - - - - errordiscard unix - - - - - discardlocal unix - n n - - localvirtual unix - n n - - virtuallmtp unix - - - - - lmtpanvil unix - - - - 1 anvilscache unix - - - - 1 scache## ====================================================================# Interfaces to non-Postfix software. Be sure to examine the manual# pages of the non-Postfix software to find out what options it wants.## Many of the following services use the Postfix pipe(8) delivery# agent. See the pipe(8) man page for information about ${recipient}# and other message envelope options.# ====================================================================## maildrop. See the Postfix MAILDROP_README file for details.# Also specify in main.cf: maildrop_destination_recipient_limit=1#maildrop unix - n n - - pipe flags=DRhu user=vmail argv=/usr/local/bin/maildrop -d ${recipient}## See the Postfix UUCP_README file for configuration details.#uucp unix - n n - - pipe flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)## Other external delivery methods.#ifmail unix - n n - - pipe flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)bsmtp unix - n n - - pipe flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipientscalemail-backend unix - n n - 2 pipe flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}mailman unix - n n - - pipe flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py ${nexthop} ${user} # added 2006-04-20 by topher#smtp-amavis unix - - n - 2 smtpsmtp-amavis unix - - - - 2 smtp -o smtp_data_done_timeout=1200 -o smtp_send_xforward_command=yes -o disable_dns_lookups=yes -o max_use=20 127.0.0.1:10025 inet n - - - - smtpd -o content_filter= -o local_recipient_maps= -o relay_recipient_maps= -o smtpd_restriction_classes= -o smtpd_delay_reject=no -o smtpd_client_restrictions=permit_mynetworks,reject -o smtpd_helo_restrictions= -o smtpd_sender_restrictions= -o smtpd_recipient_restrictions=permit_mynetworks,reject -o smtpd_data_restrictions=reject_unauth_pipelining -o smtpd_end_of_data_restrictions= -o mynetworks=127.0.0.0/8 -o smtpd_error_sleep_time=0 -o smtpd_soft_error_limit=1001 -o smtpd_hard_error_limit=1000 -o smtpd_client_connection_count_limit=0 -o smtpd_client_connection_rate_limit=0 -o receive_override_options=no_header_body_checks,no_unknown_recipient_checks -o smtpd_bind_address=127.0.0.1retry unix - - - - - error Please let me know what I can do to trouble shoot this further or if I need to post any more conf files here. 2. spamc being invoked by maildrop? I am also noticing the following in the mail logs: Jul 17 06:18:42 mail spamc[32239]: connect(AF_INET) to spamd at 127.0.0.1 failed, retrying (#1 of 3): Connection refusedJul 17 06:18:43 mail spamc[32239]: connect(AF_INET) to spamd at 127.0.0.1 failed, retrying (#2 of 3): Connection refused Jul 17 06:18:44 mail spamc[32239]: connect(AF_INET) to spamd at 127.0.0.1 failed, retrying (#3 of 3): Connection refusedJul 17 06:18:45 mail spamc[32239]: connection attempt to spamd aborted after 3 retries I believe spamc is being invoked by maildrop, possibly from a prior installation that used spamc/spamd but since I am now using amavisd-new I don't think spamc should be invoked at all, but I may be wrong here. Do I need to change anything in my maildroprc? here is my maildroprc $ cat /etc/courier/maildroprclogfile "/var/log/maildrop"VERBOSE="5" log "========"xfilter "/usr/bin/spamc"if ( /^X-Spam-Flag: YES/){ #Create SPAM IMAP folder if they don't have one `test -d $DEFAULT/.Junkmail` if( $RETURNCODE == 1 ) { `/usr/bin/maildirmake -f Junkmail $DEFAULT` `echo INBOX.Junkmail >> $DEFAULT/courierimapsubscribed` } exception { to "Maildir/.Junkmail" }} thanks! _________________________________________________________________ What can you do with the new Windows Live? Find out http://www.microsoft.com/windows/windowslive/default.aspx
