stop outgoing mails classified as spam (postfix, spamass)
 

we've had our own mail server for a few years and i havnt had any issues sending email until ive been sending not from "my network"

I connect in and authenticate with SASL and everything works fine but my emails keep getting classified as spam.

Ive read loads of tutorials and just cant work it out. Below is my master and main.cf.

Ive hacked about with both of them quite a bit so let me know if anything is clearly wrong. removed most of the comments to cut down size

One thing i have heard of is having another post used for sending main that only works with sasl and doesnt do any checks.

Ive also tried to edit the spamassasin config to get it to leave outgoing mail but no luck!

Quote:

pickup fifo n - n 60 1 pickup cleanup unix n - n - 0 cleanup qmgr fifo n - n 300 1 qmgr #qmgr fifo n - n 300 1 oqmgr tlsmgr unix - - n 1000? 1 tlsmgr rewrite unix - - n - - trivial-rewrite bounce unix - - n - 0 bounce defer unix - - n - 0 bounce trace unix - - n - 0 bounce verify unix - - n - 1 verify flush unix n - n 1000? 0 flush proxymap unix - - n - - proxymap smtp unix - - n - - smtp # When relaying mail as backup MX, disable fallback_relay to avoid MX loops relay unix - - n - - smtp -o fallback_relay= # -o smtp_helo_timeout=5 -o smtp_connect_timeout=5 showq unix n - n - - showq error unix - - n - - error discard unix - - n - - discard local unix - n n - - local virtual unix - n n - - virtual lmtp unix - - n - - lmtp anvil unix - - n - 1 anvil scache unix - - n - 1 scache smtp inet n - n - 2 smtpd -o receive_override_options=no_address_mappings maildrop unix - n n - - pipe flags=DRhu user=vmail argv=/usr/local/bin/maildrop -d ${recipient} # scan unix - - n - 2 lmtp -o disable_dns_lookups=yes -o lmtp_send_xforward_command=yes -o lmtp_data_done_timeout=1200 spfpolicy unix - n n - - spawn user=nobody argv=/usr/bin/perl /etc/postfix/policyd-spf-perl # # Injecting mail back into Postfix after content filter localhost:10025 inet n - n - 2 smtpd -o content_filter= -o myhostname=xxxxxxxxx.co.uk -o local_recipient_maps= -o relay_recipient_maps= -o smtpd_restriction_classes= -o smtpd_client_restrictions= -o smtpd_helo_restrictions= -o smtpd_sender_restrictions= -o smtpd_recipient_restrictions=permit_mynetworks,reject -o mynetworks=127.0.0.0/8 -o strict_rfc821_envelopes=yes -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_unknown_recipient_checks,no_header_body_checks -o smtpd_authorized_xforward_hosts=127.0.0.0/8

Quote:

unknown_local_recipient_reject_code = 550 smtpd_sasl_auth_enable = yes smtpd_sasl_authenticated_header = yes broken_sasl_auth_clients = yes smtpd_sasl_authenticated_header = yes smtpd_delay_reject = yes smtpd_helo_required = yes smtpd_helo_restrictions = permit_sasl_authenticated, permit_mynetworks, check_helo_access hash:/etc/postfix/helo_allow, reject_non_fqdn_hostname, reject_invalid_hostname, permit smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_non_fqdn_sender, reject_unknown_sender_domain, permit smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_pipelining, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unauth_destination, #check_sender_access hash:/etc/postfix/sender_access, check_recipient_access hash:/etc/postfix/recipient_access, reject_rbl_client list.dsbl.org, reject_rbl_client sbl-xbl.spamhaus.org, #greylist check_policy_service inet:127.0.0.1:10123 #SPF checking check_policy_service unix:/var/spool/postfix/private/spfpolicy permit content_filter=scan:[127.0.0.1]:10024

Show some example log entries that show your mail being rejected as spam.

And the headers from the offending email(s) - at least the spam related headers

Sorry, I probably mistook the OPs question as outbound rejections. I see the OP probably means, as billymayday suggests, mail is accepted, but placed in various user's spam/junk folders. The headers would be most appropriate.

No, isn't he saying that when he connects from outside using sasl to send mail to outside that it's getting flagged as spam? I presume the headers will still be added.

The inbound smtpd connection accepts the the users mail mail from his MTA. Then, smtp relays the mail elsewhere. Why remote servers classify this configuration as SPAM requires further investigation. All the mail headers would be relevant and useful. A properly configured mail server should not give trouble based on how a user's submits mail for delivery. But some do, they inspect the headers for Received headers that appear to come from certain ranges.

Make sure that your posts have Date:, From: and unique Message-ID: fields. Without those, many spam filters will classify your emails as spam.