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- Xref: sparky comp.mail.sendmail:3031 comp.mail.mh:1406
- Path: sparky!uunet!news.claremont.edu!ucivax!jromine
- From: jromine@buckaroo.ics.uci.edu (John Romine)
- Subject: Re: Differences invoking sendmail or using socket (localhost,SMTP)
- Nntp-Posting-Host: buckaroo.ics.uci.edu
- Message-ID: <2B30CAD2.24855@ics.uci.edu>
- Newsgroups: comp.mail.sendmail,comp.mail.mh
- Reply-To: mh@ics.uci.edu (John Romine)
- Organization: Univ. of Calif., Irvine, Info. & Computer Sci. Dept.
- Lines: 31
- References: <MRL.92Dec14095012@sun4.uai.com> <VIXIE.92Dec16113711@cognition.pa.dec.com> <MRL.92Dec17092427@sun4.uai.com>
- Date: 17 Dec 92 18:45:39 GMT
- Followup-To: comp.mail.mh
-
- mrl@uai.com (Mark R. Ludwig) writes:
- >I'm reticent to configure N outlying workstations to use SMTP directly
- >to our single mail hub, since I don't want to ... lose mail if the
- >hub is busy, hung, or dead.
-
- You can give a list of MTAs to contact in the "servers:" line of the
- MH mtstailor file. For better fault-tolerance, you could list some
- servers which belong to another department or organization. I have
- three mail hubs for our 300+ workstations here, and have no problems.
- I prefer to manage the three hubs rather than keep track of an MTA
- queue on each workstation.
-
- >My understanding is that mail can be dropped if the hub is not accepting
- >SMTP for a time, and the system from which mail is being sent cannot
- >maintain the background process (due to crash, reboot, ...
-
- In this case, when you "send", MH will say that no servers are available.
- The draft will be left untouched, and you can try "send" again later.
- Programs like "cron" probably won't do the right thing in this case.
- Of course you have the same kind of problem if your local sendmail
- isn't working right (workstation's disk full, out of memory, etc.).
-
- If you have a group of diskless workstations and one file server, it's
- pretty obvious that running an MTA only on the file server (and letting
- the clients post mail with SMTP) is the way to go. The workstations
- won't be doing much if the file server is down; they don't need an MTA.
-
- For larger sites, other tradeoffs come into play. You should pick
- whatever configuration you are comfortable with.
- --
- John Romine
-