![]() Really great stuff for us dynamic IP guys. You have to use the "Custom" service for this feature though. The service cost me 34 dollars for one year. Just get the router to forward port 2525 to 25 or is it 23 and your set. The email goes to their server first on the regular port and then it seemlessly relays the email to your defined mail server on port 2525 or whatever you set it to. Little did I know my Domain reg has a service just for that called email relay. The question was how do you setup email clients and email servers so that it uses a different port other than 23/25 or whatever. More of learning lab than anything.Īlso I found out an answer to a previous question I had a day or two ago if anyone is interested. My question begs to ask if it's possible to have spamassain on the same box as the main email server? Can spamassain be the frontend and then hand off to the Postfix backend on the same box and be just as effective? And Apache is on the same box which is running Red Hat 9. ![]() This is very similar to the default maildroprc, except threshold scoring is removed and all spam is deleted.I have seen several setups where the setup would be =Modem>Router> Consequently, neither the sender nor you will know if the message had been deleted, because no delivery failure status is generated. # Deleting all messages marked spamīefore the recipe is given bear in mind this is strongly discouraged for two reasons, (1) young e-mail accounts may have a lot of variability in scoring and (2) no failure notice is generated. The following rules work for both rspamd and SpamAssassin. Introducing a high variability among several users may reduce SpamAssassin’s effectiveness as the token counts are removed to store new tokens. These special tokens may appear more readily in spam or non-spam. Dilution: SpamAssassin has a finite storage capacity of tokens from scanned messages.Privacy issues: bits of e-mail used by SpamAssassin may be viewable by the main user.Those points are generally enough to correctly rank a false positive as a true positive. Bayes scores add anywhere between -2 to 3 points per message depending upon how certain SpamAssassin is of its validity. Low volume benefits from high volume: e-mail accounts that receive few e-mails will already have SpamAssassin’s Bayesian classifier system (opens new window) activated.Jumpstart filtering: newly-added users will have robust spam/ham information already in place to immediately increase the effectiveness of spam filtering.Xfilter "/usr/bin/spamc -u rest of the rules. Note, null-sender value may be changed by overriding empty_address_recipient (opens new window). Of all exposed variables, SENDER allows one to discard messages generated by the server itself by examining if the sender is null, in which case the value matches MAILER-DAEMON. System generated messages will always be MAILER-DAEMON Not always same as "To:" header.Ĭomponent left of extension delimiter (default +) in right of address delimiter (always in in MAIL FROM. VariableĬomponent right of extension delimiter (default: +) in email address after alias expansion. Postfix exposes several additional variables to improve message parsing capabilities. If the score is greater or equal to DELETE_THRESHOLD, then the message will be deleted by being sent to /dev/null otherwise deliver to the Spam mailbox on the server. DELETE_THRESHOLD is the maximum score an e-mail may have if and only if it is labeled as spam. The following block of code passes the message off to SpamAssassin if it is smaller than 512 KB.Įxplanation: if the message size is smaller than 512 KB, hand it off to SpamAssassin. SpamAssassin is invoked from the global maildrop filter, /etc/maildroprc. rspamd filters before enqueueing a message whereas SpamAssassin occurs after enqueueing the message. Syntax and usage may be found in mailfilter(7) (opens new window).ĭepending upon spam filtering technology, there may be a separate "xfilter" call for external message filtering. Basic filtering recipes are provided below. Each message goes through two levels of filters: (1) global - processed first in /etc/maildroprc followed by (2) local per-user filters in $HOME/.mailfilter. Message filtering is done prior to delivery via maildrop. maildrop was chosen for syntactic familiarity with other services, but a message may be easily dispatched to another service for final delivery. maildrop (opens new window) is utilized as the LDA agent for Postfix. Though i would get everything marked as spam put into a seperate mailbox instead, so you can check it first before deleting it as you wont. Local delivery agent ("LDA") handles last mile delivery of mail locally to the server. cmd 'cmd /c perl -S -T -w spamassassin -e < ''' & testfile & ''' > ''' & infile & '''' and set the return code in hMailServer Admin to 5 then it will delete everything that spamassassin thinks is spam.
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