Exim FAQ: Keyword-in-context index

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Q0712:  I've hacked sendmail to make an ioctl call at the time of the SMTP RCPT command, to...
Q9707:  How do I stop Sun's dtcm from hanging?
Q0088:  The Windows mailer SENDFILE.EXE sometimes hangs while trying to send a message to Exim 4, and eventually times out. It...
Q0062:  ... daemon it crashes. I ran a debugger and discovered that the crash is happening in the function getservbyname(). What's going on?
Q0016:  I've set verify = header_syntax in my ACL, but this causes Exim to complain about header lines like To:...
Q0052:  What does ridiculously long message header in an error report mean?
Q0083:  ... is sending messages containing an unqualified user name in the Sender: header line, which Exim is rejecting because I have set verify = header_syntax....
Q0087:  ... address: xx@yy may not follow <xx@yy> : failing address in "from" header mean? (I've obscured the real email addresses.)
Q0512:  I'm trying to reference the Envelope-To: header in my filter, but $h_envelope-to: is always empty.
Q0616:  Can Exim add a Content-Length: header to messages it delivers?
Q0902:  Is it possible to have Exim add a header to only certain local parts of outgoing mail?
Q0903:  How can I remove some part of the Received: header?
Q0904:  How I can insert the PGP header line using Exim filters?
Q1202:  ... Will it check the source address against RBL? Or will it check the From: header?
Q1503:  ... is being set to mailmaster instead of the real sender, and a Sender: header is being added to the message.
Q9806:  How do I get exim not to add a Sender: header to locally originated mail?
Q0016:  I've set verify = header_syntax in my ACL, but this causes Exim to complain about header lines like To: Work: Jim...
Q0083:  ... Sender: header line, which Exim is rejecting because I have set verify = header_syntax. How can I fix this?
Q0010:  Exim puts for <address> in the Received: headers of some, but not all, messages. Is this a bug?
Q0019:  ... problem in the string expansion code: it doesn't recognize references to headers such as ${h_to}.
Q0061:  What does the error Too many “Received” headers - suspected mail loop mean?
Q0901:  I would like add some custom headers to selected outgoing mail based on a specific domain and the subject line....
Q0905:  I know I can use a system filter to replace certain headers in messages, but how can I add text to existing headers? I want to add...
Q5016:  ... line. It is a spam message with the same address in both the From: and the To: headers. How can this happen, and why doesn't Exim reject it?
Q0735:  How can I block non-FQDNs in HELO/EHLOs?
Q1004:  I just wondered if it might be helpful to put the hints database on a RAM disk during regular operation. Did anybody try that...
Q0036:  Why do I get the error Permission denied: creating lock file hitching post when Exim tries to do a local delivery?
Q5017:  ... message delivery purely in memory, that is, it is handled without it ever hitting the disk?
Q0425:  ... file for all the servers, which does local delivery for the mailboxes it holds, and sends other addresses to the correct other server. Is this possible?...
Q0614:  After the holidays my ISP has always hundreds of e-mails waiting for me. These are forced...
Q0016:  ... causes Exim to complain about header lines like To: Work: Jim <jims@email>, Home: Bob <bobs@email> which look all right to me. Is this a bug?
Q0417:  ... automatically, so that people could just create a .vacation.msg file in their home directory and not have to edit their .forward file?
Q0423:  Some of our users have no home directories; the field in the password file contains /no/home/dir. This causes the error...
Q0634:  How can I stop a local transport from trying to access the user's home directory, even when the delivery is to a file that is elsewhere?
Q9804:  ... temporarily lock out a user by disabling the password and moving the home directory to another place. How can we arrange to reject mail for users...
Q0011:  Instead of exim_dbmbuild, I'm using a homegrown program to build DBM (or cdb) files, but Exim doesn't seem to be able...
Q0801:  How can I get Exim to strip the hostname from the sender's address?
Q0802:  I have Exim configured to remove the hostname portion of the domain on outgoing mail, and yet the hostname is present...
Q0103:  I'm getting an undefined symbol error for hosts_ctl when I try to build Exim. (On some systems this error is undefined reference...
Q9807:  ... have messages sent to a specific local address delayed by - say - 24 hours?
Q9301:  I'm trying to compile on an HP machine and I don't have gcc there. So I put CC=cc in the Local/Makefile,...
Q0204:  Every system has a nobody account under which httpd etc run. I would like to know how to restrict mail which comes from that...
Q0614:  After the holidays my ISP has always hundreds of e-mails waiting for me. These are forced down Exim's throat in one...
Q5028:  When I HUP the Exim daemon, the name shown in the process table changes from /usr/lib/sendmail...

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