[email protected] wrote: > We are getting duplicate emails. It seems to be the same senders, > however not every one of their emails duplicate. 5% of mails from > Charter.net will duplicate, 10% of mails from Cox will duplicate, 100% > of mails from Interfax.net will duplicate. > > Interfax (a mail to fax provider) is the only sender that consistently > send duplicate emails. When I asked them to fix it, they said: > > "it seems that we are having problems sending you the e-mails and then > getting confirmations from the mail server that it received them - and > that is causing us to resend the e-mails over and over." > > Anyone have any ideas?
Your timeout may be OK - the sender's may not be. Other than a far-end server going offline, being restarted, the only time we've seen this was during testing of 'very' large attachments between branch-office & HQ. Above a certain size (gigabytes, not megabytes in this case - though we had a fast link), we started hitting situations wherein we had gotten the full message, but the sender timed-out and dropped-off before our 250 OK, only to resend - sometimes 4 to 5 times. That sounds similar to what Interfax is now telling you - faxes-as-email can be rather large if multi-page - especially if there are graphics. How large are these typically? What do your logs show for QT and DT times for 'ordinary' messages vs the problematic ones? Bill > > My exim.conf follows: > # /etc/exim/exim.conf > host_lookup = 0.0.0.0/0 > spamd_address = 127.0.0.1 783 > qualify_domain = schmerold.com > qualify_recipient = schmerold.com > smtp_receive_timeout = 10m > message_size_limit = 25M > smtp_accept_max = 50 > smtp_banner = mx0.schmerold.com secure smtp server > domainlist relay_to_domains = partial-lsearch;/etc/exim/transport > hostlist relay_from_hosts = 127.0.0.1 > domainlist local_domains = > acl_smtp_rcpt = acl_check_rcpt > acl_smtp_mime = acl_check_mime > acl_smtp_data = acl_check_content > never_users = root > av_scanner = clamd:127.0.0.1 3310 > perl_startup = do '/etc/exim/exim_surbl.pl' > > auto_thaw = 1d > ignore_bounce_errors_after = 1d > timeout_frozen_after = 3d > > helo_allow_chars = _ > > ############# ACCEPT SETTINGS####################### > begin acl > > acl_check_rcpt: > accept hosts = : > deny local_parts = ^...@%!/|] : ^\\. > > accept local_parts = postmaster > domains = +local_domains > > # See > http://www-csit.phy.cam.ac.uk/cs-it/security/sender_reject_bydomain for > examples > deny message = Message rejected because $sender_host_address is > blocked locally. > log_message = Message rejected from $sender_host_address by > sender_reject_bydomain > senders = @@lsearch*;/etc/exim/blacklist > > accept domains = +relay_to_domains > endpass > message = relay not permitted at this server > verify = recipient > > accept hosts = +relay_from_hosts > > deny senders = : > condition = ${if ! eq{$recipients_count}{1}{1}} > message = Bounces must have only a single recipient > log_message = Another denied due to backscatter-Single > Recipient > > deny message = relay not permitted at this server > > deny message = Access denied - $sender_host_address listed by > $dnslist_domain\n$dnslist_text > dnslists = sbl-xbl.spamhaus.org : dnsbl.sorbs.net : > bl.spamcop.net : \ > multi.surbl.org : spam.dnsbl.sorbs.net : bl.spamcannibal.org : \ > dnsbl-2.uceprotect.net : b.barracudacentral.org : psbl.surriel.com > > acl_check_mime: > > warn decode = default > > deny message = Blacklisted file extension detected > condition = ${if match \ > {${lc:$mime_filename}} \ > {\N(\.exe|\.pif|\.bat|\.scr|\.lnk|\.com)$\N} \ > {1}{0}} > > deny condition = ${if <{$message_size}{100k}{yes}{no}} > set acl_m0 = ${perl{surblspamcheck}} > condition = ${if eq{$acl_m0}{false}{no}{yes}} > message = $acl_m0 > > accept > > acl_check_content: > deny condition = ${if <{$message_size}{100k}{yes}{no}} > condition = ${if eq{$acl_m0}{}{yes}{no}} > set acl_m1 = ${perl{surblspamcheck}} > condition = ${if eq{$acl_m0}{}{yes}{no}} > set acl_m1 = ${perl{surblspamcheck}} > condition = ${if eq{$acl_m1}{false}{no}{yes}} > message = $acl_m1 > > deny message = This message contains a virus or other harmful > content ($malware_name) > condition = ${if <{$message_size}{175k}{1}{0}} > demime = * > malware = * > > deny condition = ${if <{$message_size}{100k}{yes}{no}} > condition = ${if eq{$acl_m0}{}{yes}{no}} > set acl_m1 = ${perl{surblspamcheck}} > condition = ${if eq{$acl_m1}{false}{no}{yes}} > message = $acl_m1 > > warn message = X-Spam-Score: $spam_score > spam = exim:true > > warn message = X-Spam-Report: $spam_report > spam = exim:true > > warn message = Subject: **** SPAM **** $h_Subject > spam = exim > > deny message = This message scored $spam_score spam points. > condition = ${if <{$message_size}{975k}{1}{0}} > spam = exim:true > condition = ${if >{$spam_score_int}{70}{1}{0}} > > accept > > ############# ROUTER SETTINGS####################### > begin routers > redirect: > driver = redirect > data = ${lookup{$local_p...@$domain}lsearch{/etc/exim/user_alias}} > > internal: > driver = manualroute > domains = +relay_to_domains > driver = manualroute > domains = +relay_to_domains > transport = remote_smtp > route_data = ${lookup{$domain}partial-lsearch{/etc/exim/transport}} > > external: > driver = dnslookup > domains = ! +relay_to_domains > transport = remote_smtp > ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8 > no_more > > ############# TRANSPORT SETTINGS#################### > begin transports > > remote_smtp: > driver = smtp > > begin retry > * * F,2h,15m; G,16h,1h,1.5; F,3d,8h > > -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
