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Comments:
<0> DAEMON_OPTIONS
<1> yah, thanks. got it.
<2> How do I set up sendmail to use SPF ?
<3> most people use a milter.
<4> hello. I updated sendmail on a gateway server yesterday to sendmail-8.12.11-4.22.10.legacy and now it appears that if you try to send an email in it tries to resolve the sender. Keep getting this error: 451 4.1.8 Domain of sender address ******* does not resolve
<5> hi, all. I want rewrite "rcpt to:" field from name@my_hostname to name@oilspace.com. "name" can be any -- root, www, ... I want do it on sender side. How it possible? MASQUERADE_AS rewrite only "mail from:" field.
<6> hi, i am getting tons of mail with no sender address targeting for nonexisiting users and it crashes my mailscanner i was told to you milter-ahead to solve it anyone know some other ways?
<7> Hi! I use linux, and have to reinstall it. I use sendmail / imap. If i reinstall it and preserve the /var partition, will the usermapping to their mail work?
<7> Hi! We have a mailserver, and have to reinstall it. I use sendmail / imap. If i reinstall it and preserve the /var partition, will the usermapping to their mail work, so that the users will find their mail in squirrelmail or their imap/thunderbird?
<0> depends
<0> preserving /var isn't enough
<6> how do you add libmilter support to sendmail?
<0> jensmarti: by compilation
<7> we dont use ldap or something like that or virtual users
<7> just regular /etc/p***wd /etc/shadow /etc/group
<0> jensmarti: sendmail shipped with current OS's normally already have milter support compiled in
<6> Zerberus: it is so complicated :( :( we have a problem that tons of mails coming in with no sender address to invalid users and this cripple the sendmail
<6> how can i check if libmilter is compiled in?
<0> knikker: yes, having the exact same UID/GID for the users is important too
<6> so i try to install mailfromd
<0> knikker: mail too can be stored in user homedirs
<0> knikker: /var/spool/mail is just the INBOX spool
<7> yes that is true, i have a /home partition to
<0> jensmarti: sendmail -bt -d0.9 < /dev/null
<7> so if i preserve /home /var and the p***word files it should be enough?
<6> Zerberus: how can i see if libmilter is installed?
<6> 2sec
<0> knikker: which imap server do you use?
<6> Zerberus: ok i dont see milter anywhere
<6> :( :(
<0> which OS?
<6> slackware linux
<0> would be moron to exclude milter compilation
<0> which sendmail version?
<6> 2sec
<5> hi, all. I want rewrite "rcpt to:" field from name@my_hostname to name@oilspace.com. "name" can be any -- root, www, ... I want do it on sender side. How it possible? MASQUERADE_AS rewrite only "mail from:" field.
<0> kyrh: there is no such functionality in sendmail, even why should it?
<0> kyrh: you can trick using procmail and formail to modify the header
<5> Zerberus: but, sendmail can rewrite rcpt to address, when getting message. Isn't it?
<6> zerberus: it says: version 8.13.6 dnsmap log matchgecos milter mime7to8 mime8t07 so it is included?
<5> Zerberus: I mean virtusertable
<6> Zerberus: ok it says milter or should it say libmilter?
<7> zeberus: We use dovecot imap-server
<6> Zerberus: are you familiar with mailutils ?
<0> jensmarti: milter is in then
<7> with fedora core 3
<7> server
<0> knikker: ok, check dovecot.conf where it accesses mail storage
<6> zerberus: what do you recommend to do to get rid of tons of mails coming with no sender and trying to sent to invalid users they crash my system ?
<6> Zerberus: mailfromd ?
<0> kyrh: virtusertable is no rewrite, it just maps incoming mail addresses to user accounts or other addresses
<7> Zerberus: thanks, i will do that.
<0> jensmarti: sendmail by default rejects mail to non existing user addresses
<6> Zerberus: seems not they sent to forexample odijdO@mydomain.com
<6> etc.
<6> etc..
<6> to overflow the system
<0> then you misconfigured your system.
<6> from empty sender address
<6> how can i check if it is ok?
<6> some told me to install milter-ahead
<0> depends on your complete environment setup
<6> can i do some basic things
<6> to check it
<6> or check if this is enabled in my sendmail.cf file?
<0> yes, read your sendmail.mc
<6> what should i check for
<6> i have /etc/mail/sendmail.cf
<6> how do i know if this feature to block mails with empty sender is enabled?
<0> you DON'T want to block that!
<6> so how can i block all these emails
<6> forexample if they sent to oihoih@mydomain.com
<0> the problem is not MAIL FROM:<>
<6> do i need to tell sendmail all my valid users and block from anyone else?
<0> the problem is accepting mail to invalid addresses
<0> http://rfc-ignorant.org/policy-dsn.php
<6> so i tell jensmarti@mydomain.com is valid and block all else?
<6> :)
<6> yeah
<0> that is the default
<6> so how come they still sent so many 100 mails like this
<6> can i check on my system if it is bad configuration?
<6> Zerberus: can i check if my configuration is good?
<0> i can't judge if you can
<6> clearly it is not when my system crash
<6> :)
<6> could it be something in my sendmail.cf that is wrong?
<5> Zerberus: may be I can do it with another mechanism... I have several machines with crontabs for many users. I want send mail from all this machines to central relay with fine corporate address. After that relay send this mail to our real mail server. (I want this strange configuration, because we have several private networks and want centralization)
<0> jensmarti: can be caused by different things
<6> Zerberus: do you know some ways i can check if it is bad
<0> jensmarti: if you don't use sendmail.mc to create your sendmail.cf, then much fun do diagnose
<6> Zerberus: :(
<6> Zerberus: what should i look for in sendmail.mc ?
<0> understand each setting in sendmail.mc
<6> Zerberus: can you please help me
<0> sorry, i charge mail consulting with US$250/hour
<6> Zerberus: the problem is i run mailscanner+spam******in and they crash when receiving tons of mail to invalid users with no sender
<6> hehe
<6> $250!
<0> if you are willing to pay me, well, we are in business then
<6> :(
<6> anyone else alive?
<8> moi
<5> Zerberus: can you show me another way for resolv my problem?
<5> Zerberus: only procmail?
<0> kyrh: why would you need to rewrite the envelope address in incoming direction?
<5> because I have complicated mail structure. host_with_cron -> mailhost -> mailserver. mailhost must understand, what @free4.mow.oilspace.com (and any other host names) must be mapped to @oilspace.com
<0> no problem using mailertable
<6> Zerberus: ok i found out we use mailertable to specify domain and the IP address to forward it to. SO i tried to connect and when i do a rcpt to: oisjsdo@domain.com it works also. So it seems the mailertable setup do not validate is this correct?
<0> if you need to rewrite, then rewrite on the sending host using masquerading or generics feature
<5> Zerberus: you mean using mailertable on mailhost?
<0> jensmarti: mailertable is correct - just define valid addresses in access_db
<0> kyrh: mailertable has nothing to do with rewriting
<6> Zerberus: thanks :) do you know how a format should look like just put bob@mydomain.com in access.db and reload sendmail?
<6> or do i need to reload it like aliases file newaliases
<0> jensmarti: please read the cf/README
<0> http://www.sendmail.org/m4/anti_spam.html discusses it too
<6> thanks
<6> do you know how to reload the access.db file?
<0> yes
<0> explained in the cf/README as well
<5> Zerberus: but masquerade rewrite only "mail from:". define(`MAIL_HUB', `mailhost') rewrite "rcpt to:" to "@mailhost"
<6> how can you make access.db only accept to specific mail and block all else ?
<0> jensmarti: please take the time to read the docs and understand them
<6> i cant find it on the link you gave
<0> it does not help if you don't understand what you set
<6> it dont say how to block * but only allow 2 addresses
<0> a specific rule overrides a general one
<0> the rest is said in there
<6> so i need
<6> *@* DENY
<6> jensmarti@domain.com OK
<6> is correct?
<0> no
<0> To:domain.com ERROR:5.7.1:550 invalid address
<0> To;jensmarti@domain.com RELAY
<6> why relay instead of OK
<6> relay allows more
<0> i think you are relaying to a different MTA
<6> would i matter
<6> if i use OK then
<6> :)
<0> it won't relay then
<9> hello sendmail dudes, is there a setting in sendmail that would make outgoing email not have CR/LF ? i am running rt and mails used to go out ok but now have no CR/LF and the mail os all on one line, i cant find anything in RT so am looking at sendmail, i have only just taken over this server and dont know whats been screwed up any help would be great
<9> just realise root is getting mailed loads of CR/LF ????
<10> I'm not sure the CR/LF issue belongs to the MTA level...
<10> I'd suspect the sending MUA for producing those.
<9> neither am i but i am struggling to find the cause
<9> also roots mail file has loads of CR/LF and a few QUIT^M in it
<9> no real mail in it
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