logs archiveIRC Archive / Freenode / #exim / 2009 / December / 11 / 1
dayo
if i upgrade my exim 4.69 to 4.71 will it override my config? would i need to reconfigure the whole thing? what should i backup before upgrading?
i'm running it on ubuntu 8.04
henk
dayo: it depends how you changed the config. usually debian packages have "configfiles" that are only touched if they are unchanged. if changes are detected you will be asked if you want to replace it. the file with your changes will have a .dpkg-old extension if you do. if not, the new file will be there with a .dpkg-new extension iirc.
dayo: so if you only changed the files marked as configfiles in the debian package, you won't break anything without explicitly saying so.
dayo
henk: ok thank u. i will give it a shot this evening, then.
Xavierk
can someone help me figure out what this "Could not complete sender verify callout" is... it seems to target specific servers or something... I can't figure out what the resolution is
henk
Xavierk: you should only do callouts to servers under your control
Xavierk
really... what exactly does a callout do?
sorry about the delay, didn't see the window flashing
doesn't it ensure that it is a real mail server sending emails... so wouldn't that be true for all valid emails?
henk
Xavierk: it creates an smtp connection to the mx host responsible for the sender address, and does everything up to RCPT TO:. if the response is a 2xx code, the callout is successful, if it's 5xx, it failed.
so you create load on a probably uninvolved mailserver for almost all spam.
Xavierk
I see
you are right about the load.... I did notice that
henk
some mailservers are misconfigured and don't accept mail from <> which is the default for callouts. so the result is actually wrong. otoh if you use the recipient address or one of your own addresses for the MAIL FROM: in the callout, you might also get a wrong result. you just can't rely on other mailservers being configured correctly and answering the callout properly.
         

Xavierk
one of the servers that was triggering the could not complete, was a known good server and the email was from a valid user... but kept rejecting them consistently... do you have any clue of why?
henk
Xavierk: no, but you can try that yourself and see the return code from the other server.
Xavierk
how would I test that?
henk
telnet mailserver 25
ehlo your.host.name
mail from: <>
rcpt to: the.sender@ddress.used
that MIGHT give you the reason, but not necessarily.
most mailservers reject after RCPT TO: if the connecting host is in their blacklist or in too many dns blacklists. like mine.
Xavierk
henk, can I private message you?
henk
Xavierk: i don't know, you can give it a try ;)
Xavierk
so what would cause the extended delay in receiving the 250 Ok and is there a way to resolve that?
henk
Xavierk: that's what i mean with "only doing callouts to servers you control"... you never know how an other server reacts and what the admins are doing with it. you can hardly tell why there are timeouts without knowing the other's config. perhaps he is doing a callout as well? or asking 274 blacklists, which takes some time as well. perhaps one or more of those blacklists times out for him...
it's pretty unreliable.
Xavierk
something to look into.... I can access the server... so I can check that information... but you've been most helpful
henk
ah, you can actually access that other server?
Xavierk
ye
err yes
no, it isn't doing call outs
henk
if that's an exim on there you could do an exim -bhc otherserverip and perhaps see what is taking so long.
or what it is doing at that moment of the smtp dialogue that could possibly timeout.
Xavierk
not sure what to make of most of this... but I see this at the end: accept: condition test succeeded
it was rather fast
oh well I turned off the callout... should I leave the option, sender verification turned on?
that seems simple enough verifying the domain..
henk
that's what i do here too...
Xavierk
figured the callout would help reduce the spam...yeah it did....but I see now there is too much of an inconsistency with it
henk
hehe, thought so too about 4 months ago
Pkunk
how do i setup $home if i'm using virtual users via ldap
cga_
hi all, i'm trying to put up a mail server with this howto: https://robots.org.uk/MailSystem and i wonder how to tell exim to use /var/mail/domain/user maildir instead of maildir_home since i'll have virtual users stored in the db and not on teh system. please thanks
Pkunk
cga_: use the lookup functions for SQL
address_data = ${lookup ldap{ldap://localhost/ou=Users,dc=mydomain.com??sub?uid=${quote_ldap:$local_part@$domain}}}
is what i use for ldap users
and to deliver to custom .maildir , use a custom router with transport = virtual_maildir
cga_
Pkunk: thanks very supportive, i'll have a look at those. but this means i cannot set something like "dc_deliver=/path" ?
         

lau
hello, how can I know if exim was compiled with TLS support on my living server ?
petemc
exim -bV
lau
hi petemc "Support for: crypteq iconv() IPv6 GnuTLS move_frozen_messages" should be ok ?
in my /etc/exim4 I only got the following files
conf.d/ exim4.conf.template passwd.client update-exim4.conf.conf
is this meaning that I do not have any .conf set up ?
petemc
if you read the output if exim -bV , it tells you which configuration file its using
lau
yes Configuration file is /var/lib/exim4/config.autogenerated
I would like to set up TLS signature in order to make my php application using exim4 mta send signed emails
i assume that if I copy /var/lib/exim4/config.autogenerated to /etc/exim4/exim4.conf exim4 would use it
as non-split configuration scheme ?
Todd
lau: if that's true I'd be very excited
lau
i am noobing here but how does it work to make the exim4 server sign emails
and send them signed to MDA ?
petemc
thats up to the mail client
lau
petemc: do you mean through gpg key ?
nothing to deal with mailserver though !
is it possible to "certify" that the mailserver which transfered the email is my server ?
is through TSL mechanisms ?
mns
I've got a debian/squeeze laptop. I've currently got exim configured for "mail sent by smarthost; no local mail". Ideally what I'd like to have is "send mail to a selected smarthost depending on if we're at the office or home; deliver local mail (root, postmaster, etc.) locally. "
Any ideas on how to do that ? I'm new to exim4.
though I've used sendmail and postfix.
« prev next »