Date: Fri, 29 Jul 2005 11:06:13 +0100 From: Alexandre Vieira <nullpt@gmail.com> To: freebsd-questions@freebsd.org Subject: Re: Sendmail help needed Message-ID: <755cb9fc050729030635ae70b8@mail.gmail.com> In-Reply-To: <6.1.0.6.2.20050729022549.041a8d10@cobalt.antimatter.net> References: <755cb9fc05072815171ac8003@mail.gmail.com> <6.1.0.6.2.20050728153729.156ff2d0@cobalt.antimatter.net> <755cb9fc050729003050edf7ef@mail.gmail.com> <6.1.0.6.2.20050729003728.06268da0@cobalt.antimatter.net> <755cb9fc05072901482a22540c@mail.gmail.com> <6.1.0.6.2.20050729022549.041a8d10@cobalt.antimatter.net>
next in thread | previous in thread | raw e-mail | index | archive | help
Hello Glenn, Thanks for your time. Well it is actually an issue. The reports are very important for our departments. They do not have access to see if the procedures went OK and as consequence they can't continue to work. If I can't get this to work with redundancy I will have to make some kind of script to change the A record for the mailhub, in our nameserver, when it's down so the backup mailserver can get with it's work. Any help on this issue is apreciated. On 7/29/05, Glenn Dawson <glenn@antimatter.net> wrote: > At 01:48 AM 7/29/2005, Alexandre Vieira wrote: > >Hello Glenn, > > > >The odds of the reporting system are not of my fully knowledge, I just > >know how and what mails go from where to who. > > > >Imagine that a script on a reporting machine does this: > > > ># mailx -s ERROR_FOUND_IN_PROC_SYNC syncproj > > > >It will try to deliver the mail locally, as suposed to. If I define a > >central hub or a Smart host it will deliver the mail I exampled to > >syncproj@mailhub and it works fine. The problem is that it won't > >lookup the mailhub MX record, It will send it directly to mailhub:25. > >Now imagine that mailhub is down? There is a backup server listed as > >an MX record for the mailhub domain with a higher pref that would take > >the work while mailhub prefered MX is down. >=20 > If that's all you're worried about, you don't have to worry. If you > specify a smart host and it's not available, the mail will get queued > locally until it is available. The default settings will hold it in the > queue for 5 days. If your smart host is down for that long, you probably > have other things to worry about. >=20 > -Glenn >=20 >=20 > >I've been reading a little more and I think there is some kind of > >feature/option that force a MX lookup on the mailhub host. > > > >Thank you > > > >On 7/29/05, Glenn Dawson <glenn@antimatter.net> wrote: > > > At 12:30 AM 7/29/2005, you wrote: > > > >Hello, > > > > > > > >Thanks for the help. > > > > > > > >The thing is that our main mailserver is not able to work with repor= ts > > > >from only one address. It has a db with some "names" that match > > > >name@ourinternaldomain.tld and then send the reports to the respecti= ve > > > >persons/mailing lists. > > > >So the basics of the question is: Is it possible to get every mail > > > >(including local mail) redirected to one domain with MX lookup? I've > > > >been reading about LUSER_RELAY, LOCAL_RELAY, stickyhost, but I don't > > > >know if this will solve the problem. > > > > > > ok, lets see if I understand this correctly... > > > > > > You have an existing mail server that handles mail for you local netw= ork. > > > Some of the mail sent to that server is compared to a database which = has > > > entries that look like somename@internaldomain.com. If a match is fo= und, > > > the message is redistributed to some list of email addresses. So far= so > > > good? hope so... > > > > > > The addresses that are looked at for a match, are they the from addre= ss or > > > the to address? > > > > > > For example, I send an email to you mail server using the address > > > user@foo.com. Since I sent the email, it looks like it came from > > > glenn@antimatter.net. One of those two addresses are compared to a > > > database to decide what to do with the message. From your descriptio= n, it > > > sounds like the To: address is the one being looked at by the mail se= rver. > > > > > > "Local" mail is normally considered to be mail between two addresses = which > > > are on the same machine. The from and to addresses for the local mai= l can > > > have only account names, or, one or both could have a domain associat= ed > > > with it. Potentially, mail between the following pairs of addresses = could > > > all be local: > > > > > > From: To: > > > foo bar > > > foo@internal.com bar > > > foo bar@internal.com > > > > > > From your description above, it sounds like you're looking at mail t= hat is > > > always delivered to the same address on the mail server, and then you= 're > > > using the address the mail was from to decide what to do with it. Is= that > > > correct? > > > > > > From the description below (from the original email) it sounds like = the > > > scripts in question are running on machines that are not the mail ser= ver, > > > and they're only specifying the username to deliver to, and not addin= g any > > > domain name or hostname to the recipient. Depending on what else is > > > happening on the machines that have the scripts that generate the mai= l, it > > > sounds like building a null client is probably the simplest thing to > > > do. Other options are using some of the masquerading features, or by= using > > > LOCAL_RELAY to force unqualified names to be send to a central server= which > > > will figure out what to do with them. > > > > > > Hope some of that helps...Let me know if I can clarify anything, I'll= be > > > around for at least another few hours... > > > > > > -Glenn > > > > > > > > > >On 7/28/05, Glenn Dawson <glenn@antimatter.net> wrote: > > > > > At 03:17 PM 7/28/2005, Alexandre Vieira wrote: > > > > > >Hello folks, > > > > > > > > > > > >I'm trying to get past a standard in sendmail which is very simp= le. > > > > > > > > > > > >I have several machines reporting mails trough local MTA's (send= mail) > > > > > >in each one of the boxes to our main mailserver. The thing is, I= did > > > > > >not developed the scripts and they are using "mailx -s <subj> us= er" > > > > > >which normally would try to deliver it to a local account in the > > > > > >machine. So the question is: Can I, in any way, define that ever= y > > > > > >"user" passed on the mailx in every script gets resolved to > > > > > >user@somedomain.tld and not to a local system account? We have > > > > > >hundreds of "names" in the scripts, so aliasing doesn't work for= me. > > > > > > > > > > If you don't _ever_ want things to be delivered locally, you can = create > > > > > what sendmail calls a null client. That will send all mail to th= e > > address > > > > > you specify. You can get more details from > > /usr/share/sendmail/cf/README > > > > > > > > > > -Glenn > > > > > > > > > > > > > > > >My current hack is defining DR and DS in the sendmail.cf to a st= atic > > > > > >hostname but that takes redundancy to our mail system since if t= he > > > > > >main mailserver is down the backup mail server (higher MX) won't= take > > > > > >any effect. > > > > > > > > > > > >Any help apreciated > > > > > >Cheers > > > > > >_______________________________________________ > > > > > >freebsd-questions@freebsd.org mailing list > > > > > >http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > > > > >To unsubscribe, send any mail to > > > > "freebsd-questions-unsubscribe@freebsd.org" > > > > > > > > > > > > > > > > > >Thanks > > > >_______________________________________________ > > > >freebsd-questions@freebsd.org mailing list > > > >http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > > >To unsubscribe, send any mail to > > "freebsd-questions-unsubscribe@freebsd.org" > > > > > > > > > > > >-- > >Alexandre Vieira - nullpt@gmail.com > >_______________________________________________ > >freebsd-questions@freebsd.org mailing list > >http://lists.freebsd.org/mailman/listinfo/freebsd-questions > >To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.= org" >=20 > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.o= rg" >=20 --=20 Alexandre Vieira - nullpt@gmail.com
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?755cb9fc050729030635ae70b8>