Exim FAQ: Keyword-in-context index

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Q5023:  Why does Exim do ident callbacks by default? Isn't this just a waste of resources? I've been...
Q0034:  Exim works fine on one host, but when I copied the binary to another identical host, it stopped working (it could not resolve DNS names).
Q0413:  ... user, which sometimes include the user's own test messages. Can it be told to ignore the .forward file and/or inform the user of the error?
Q0711:  ... it possible to make Exim only filter parts of an incoming email - e.g. ignore large MIME attachments for example and only process text/plain?
Q9708:  I want Exim to use only the resolver (i.e. ignore /etc/hosts), but don't want to alter the nsswitch.conf file in Solaris...
Q9603:  I'm seeing the message inetd[334]: imap/tcp server failing (looping), service terminated on a RedHat 5.2 system, causing imap...
Q9603:  I'm seeing the message inetd[334]: imap/tcp server failing (looping), service terminated on a RedHat 5.2 system, causing imap...
Q9603:  ... terminated on a RedHat 5.2 system, causing imap connections to be refused. The imapd in use is Washington Univers 12.250. Could this be anything to do with...
Q0009:  What does no immediate delivery: too many messages received in one SMTP connection mean?
Q0049:  What does the log message no immediate delivery: more than 10 messages received in one connection mean?
Q0306:  ... configure Exim to send all non-local mail to a central server if it cannot be immediately delivered by my host? I don't want to have queued mail waiting on my host....
Q1404:  ... dial in. How can I arrange for any new messages that arrive while I'm connected to be delivered immediately?
Q1406:  ... to collect mail from my ISP, only the first 10 messages get delivered immediately; the remainder just sit on the queue until a queue runner process finds...
Q1408:  If email has been deferred to a member on a local mailing list ( implemented through forward files), and one of our ETRN clients is on this mailing list,...
Q1001:  ... I'm running a large mail server. Should I set split_spool_directory to improve performance?
Q0716:  ... mail? I want to do this so my family members don't get any spam (or other inappropriate mail).
Q0406:  ... using the .forward to pipe to a shell command which appends to the user's INBOX. How can I forbid this?
Q0025:  I can't seem to get a pipe command to run when I include a ${if expansion in it. This fails:
Q0413:  ... invalid, Exim defers delivery of all messages to that user, which sometimes include the user's own test messages. Can it be told to ignore the .forward file...
Q0110:  I'm trying to build Exim with PAM support. I have included -lpam in EXTRALIBS, but I'm still getting a linking error:
Q5009:  ... few exceptions. For instance I don't want foo.oyoy.org or bar.oyoy.org to be included. What is the best way to do this?
Q0005:  Why is Exim not rejecting incoming messages addressed to non-existent users at SMTP time?
Q0021:  ... with smtp_accept_max set to 500, but this problem started to occur at about 300 incoming connections.
Q0316:  I would like to forward all incoming email for a particular domain to another host via SMTP. Whereabouts would...
Q0402:  How do I arrange for all incoming email for *@some.domain to go into one pop3 mail account? The customer...
Q0414:  ... local domain because my users have upper case letters in their login names, but incoming mail now has to use the correct case. Can I relax this somehow?
Q0425:  ... according to the first letter of the user name. All the servers receive incoming mail at random. I would like to have the same configuration file for all...
Q0708:  How can I run customized verification checks on incoming addresses?
Q0711:  Will Exim allow me to create a file of regexs and match incoming external email to the list - and if a match is found file the offending...
Q5014:  ... check_spool_space, Exim is still checking the amount of space on the spool for incoming SMTP messages that use the SIZE option. Can I suppress this?
Q5020:  How can I make Exim receive incoming mail, queue it, but not attempt to deliver it? I want to be in this state...
Q9501:  The IP addresses for incoming calls are all being given as 255.255.255.255 or 0.0.0.0.
Q9809:  Can I configure Exim so that my gateway host sends a copy of each incoming message to each of two internal hosts?
Q0047:  ... see the message Mailer daemons: exim abandoned: unknown, malformed, or incomplete option -bz sendmail. What does this mean?
Q0319:  ... mails on my queues that are sticking around longer than the retry time indicates they should. They are all getting frozen because some remote admin has...
Q5015:  ... start off <= <>. Am I correct in assuming that the <> indicates that the envelope did not contain any ``From'' data?
Q0604:  ... mailboxes. How can I get Exim to append the ctrl-A characters that separate indvidual emails?
Q9603:  I'm seeing the message inetd[334]: imap/tcp server failing (looping), service terminated on a RedHat 5.2 system, causing...
Q0413:  ... user's own test messages. Can it be told to ignore the .forward file and/or inform the user of the error?
Q0904:  How I can insert the PGP header line using Exim filters?
Q9701:  Exim builds fine with gcc on SunOS 4 but crashes inside sscanf().
Q0702:  I don't want to block spam entirely; how can I inspect each message before deciding whether or not to deliver it?
Q5021:  What does Exim use for POP as a default? Do I have to install anything else?
Q0105:  What does the error install-info: command not found mean?
Q0039:  I have installed Exim, but now I can't mail to root any more. Why is this?
Q0722:  I installed Amavis and it is working, but bounces are simply vanishing.
Q9605:  I installed debian 2.2 linux on a small 325mb 486 laptop. When I try to test the Mail program,...
Q5009:  ... match all domains of the form *.oyoy.org but want a few exceptions. For instance I don't want foo.oyoy.org or bar.oyoy.org to be included. What is the...
Q0020:  ... time to respond with the banner, when connections to other ports respond instantly? It sometimes takes 30 seconds to respond.
Q0043:  What does the error Unable to get interface configuration: 22 Invalid argument mean?
Q0314:  I have a really annoying intermittent problem where attempts to mail to valid sites are rejected with unknown mail...
Q0309:  ... addressed to a domain whose MX points to the firewall, it is forwarded to the internal mail server, without having to have a list of all the domains involved?...
Q9809:  ... my gateway host sends a copy of each incoming message to each of two internal hosts?
Q0502:  ... result of a pipe command so that I can filter externally and redirect internally. Is this possible?
Q0305:  ... server? The local hosts are all DNS-registered and behave like normal Internet hosts.
Q1401:  When I'm not connected to the Internet, how can I arrange for mail to other hosts on my local network to be delivered,...
Q0803:  ... the outside world, but not for messages that remain within the local intranet.
Q0043:  What does the error Unable to get interface configuration: 22 Invalid argument mean?
Q0055:  What does the error Failed to open wait-remote_smtp database: Invalid argument mean?
Q0413:  When a user's .forward file is syntactially invalid, Exim defers delivery of all messages to that user, which sometimes include the...
Q1105:  Exim is complaining about an invalid command line when Majordomo tries to send it a message for delivery.
Q0309:  ... internal mail server, without having to have a list of all the domains involved?
Q0712:  I've hacked sendmail to make an ioctl call at the time of the SMTP RCPT command, to check if a user has exceeded...
Q0023:  Why is Exim refusing to relay, saying failed to find host name from IP address when I have the sender's IP address in an ACL condition? My configuration...
Q0028:  Exim is reporting IP addresses as 0.0.0.0 or 255.255.255.255 instead of their correct values....
Q0031:  Exim is rejecting connections from hosts that have more than one IP address, for no apparent reason.
Q0035:  I set a hosts condition in an ACL to do a lookup in a file of IP addresses, but it doesn't work.
Q0045:  I see entries in the log that mention two different IP addresses for the same connection. Why is this? For example:
Q0302:  ... relevant MX records point to non-existent hosts when MX records point to IP addresses?
Q9501:  The IP addresses for incoming calls are all being given as 255.255.255.255 or...
Q1405:  I have an ISDN connection and would like a way of running the queue automatically when...
Q0042:  My ISP's mail server is rejecting bounce messages from Exim, complaining that they have no...
Q0305:  ... delivered directly to the relevant hosts, but all other mail to be sent to my ISP's mail server? The local hosts are all DNS-registered and behave like normal...
Q0317:  ... alternative smart hosts, where the one to be used is determined by which ISP I'm connected to.
Q0614:  After the holidays my ISP has always hundreds of e-mails waiting for me. These are forced down Exim's...
Q1406:  When I dial up to collect mail from my ISP, only the first 10 messages get delivered immediately; the remainder just...
Q0312:  Is it possible to use a conditional expression for the host item in a route_list for manualroute router? I tried the following, but it...

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