We want to create such a file for the user falko now. Make sure you're logged in as falko, not root! Then we do this:. Of course, you can still use is falko here , so the file could look like this as well:. Of course, falko doesn't want to start the retrieval manually every few minutes, so we create a cron job for him. Still as the user falko , we run. This is about how to configure fetchmail to use with mailboxes having SSL, especially with gmail.
Of course the principles of it can be applied to any SSL capable mailbox as well. It's been a long time since I set up my fetchmail it's one of those "set and forget" things but, IIRC, an existing, properly configured MTA is not a prerequisite, as the preliminary comment states. Fetchmail should hand off retrieved mail to whatever application is stipulated in the run control file. It defaults to port 25 only if it has not been given another application.
Like someone else, it's been years since I last set up fetchmail, so thanks for making it as painless as possible - I couldn't remember how to do it at all!
There is a script on the internet which creates multiple instances which enables the administrator to create multiple IMAP IDLE connections each to a different account.
It's use and how to alter it to work on Debian is described below. Remember to restrict permissions for that file in order to prevent other users to see your password. There is also another variant of storing passwords which is described in section Passwords in Configuration Files. Resources Blog Articles. Menu Help Create Join Login.
Open Source Commercial. Italian 1. Inactive 1. Freshness Recently updated 2. Mit einem Experten sprechen. Linode offers predictable flat fee pricing, which is universal across all 11 of its data centers. Sortmail is a program to process incoming email, classify it and process it accordingly. Sortmail can handle incoming email as it arrives or download from a POP server. Sortmail is easier to configure than procmail and can replace fetchmail.
Skip is a lightweight and portable tool for managing secrets such as login passwords and easily automating the programs that use them without leaving the secrets unencrypted on disk. PPP links to remain up indefinitely. After each poll interval, if the link is up but no other activity has occurred on the link, then the poll will be skipped. However, when fetchmail is woken up by a signal, the monitor check is skipped and the poll goes through unconditionally. This would be a security hole, but fetchmail runs with the effective GID set to that of the kmem group only when interface data is being collected.
This option does not work with ETRN. The pathname argument must be either "-" a single dash, meaning to read the configuration from standard input or a filename. NOTE: since fetchmail 6. This avoids the truncation of idfiles when running out of disk space. This enables replies on the client to get addressed correctly otherwise your mailer might think they should be addressed to local users on the client machine!
This option disables the rewrite. This option is provided to pacify people who are paranoid about having an MTA edit mail headers and want to know they can prevent it, but it is generally not a good idea to actually turn off rewrite. See the discussion of multidrop address handling below.
The optional count argument only available in the configuration file determines how many header lines of this kind are skipped. A count of 1 means: skip the first, take the second.
A count of 2 means: skip the first and second, take the third, and so on. This option is useful if you are using fetchmail to collect the mail for an entire domain and your ISP or your mail redirection provider is using qmail. Whenever qmail delivers a message to a local mailbox it puts the username and hostname of the envelope recipient on this line. The major reason for this is to prevent mail loops.
This is what this option is for. The configuration report is a data structure assignment in the language Python. Normal user authentication in fetchmail is very much like the authentication mechanism of ftp 1. The correct user-id and password depend upon the underlying security system at the mailserver.
If the mailserver is a Unix machine on which you have an ordinary user account, your regular login name and password are used with fetchmail. If you use a different login name on the server machine, specify that login name with the -u option.
This is the safest way to use fetchmail and ensures that your password will not be compromised. This is convenient when using fetchmail in daemon mode or with scripts. Fetchmail first looks for a match on poll name; if it finds none, it checks for a match on via name.
To show a practical example, a. This feature may allow you to avoid duplicating password information in more than one file. On mailservers that do not provide ordinary user accounts, your user-id and password are usually assigned by the server administrator when you apply for a mailbox on the server. This facility was vulnerable to spoofing and was withdrawn in RFC In this variant of POP3, you register an APOP password on your server host on some servers, the program to do this is called popauth 8.
Each time fetchmail logs in, it sends an MD5 hash of your password and the server greeting time to the server, which can verify it by checking its authorization database. Note that APOP is no longer considered resistant against man-in-the-middle attacks. RETR or TOP fetchmail makes some efforts to make the server believe messages had not been retrieved, by using the TOP command with a large number of lines when possible. TOP is a command that retrieves the full header and a fetchmail -specified amount of body lines.
It is optional and therefore not implemented by all servers, and some are known to implement it improperly. On many servers however, the RETR command which retrieves the full message with header and body, sets the "seen" flag for instance, in a web interface , whereas the TOP command does not do that. In all other cases, fetchmail will use the TOP command. This implies that in "keep" setups, "uidl" must be set if "TOP" is desired.
Note that this description is true for the current version of fetchmail, but the behavior may change in future versions. You may pass a username different from your principal name using the standard --user command or by the. This can be useful, e. If you are using POP3, and the server issues a one-time-password challenge conforming to RFC, fetchmail will use your password as a pass phrase to generate the required response.
This avoids sending secrets over the net unencrypted. If you compile in the support, fetchmail will try to perform an RPA pass-phrase authentication instead of sending over the password en clair if it detects " compuserve.
You can also do this using the "ssl" user option in the. The encrypted ports will be selected automatically when SSL is enabled and no explicit port is specified. The --sslproto option can be used to select the SSL protocols default: v2 or v3.
The --sslcertck command line or sslcertck run control file option should be used to force strict certificate checking - see below. TLS connections use the same port as the unencrypted version of the protocol and negotiate TLS via special parameter.
The certificate is checked to verify that the common name in the certificate matches the name of the server being contacted and that the effective and expiration dates in the certificate indicate that it is currently valid.
If any of these checks fail, a warning message is printed, but the connection continues. The server certificate does not need to be signed by any specific Certifying Authority and may be a "self-signed" certificate. If the --sslcertck command line option or sslcertck run control file option is used, fetchmail will instead abort if any of these checks fail.
Use of the sslcertck or --sslcertck option is advised. Some SSL encrypted servers may request a client side certificate. If requested by the server, the client certificate is sent to the server for validation. Some servers may require a valid client certificate and may refuse connections if a certificate is not provided or if the certificate is not valid.
Some servers may require client side certificates be signed by a recognized Certifying Authority. Use of strict certificate checking with a certification authority recognized by server and client, or perhaps of an SSH tunnel see below for some examples is preferable if you care seriously about the security of your mailbox and passwords.
Starting the daemon mode There are several ways to make fetchmail work in daemon mode. You must specify a numeric argument which is a polling interval in seconds.
If you do this, fetchmail will always start in daemon mode unless you override it with the command-line option --daemon 0 or -d0. Only one daemon process is permitted per user; in daemon mode, fetchmail sets up a per-user lockfile to guarantee this. Awakening the background daemon Normally, calling fetchmail with a daemon in the background sends a wake-up signal to the daemon and quits without output. The background daemon then starts its next poll cycle immediately. The wake-up action also clears any authentication or multiple timeouts.
Terminating the background daemon The option --quit will kill a running daemon process instead of waking it up if there is no such process, fetchmail will notify you. If the --quit option appears last on the command line, fetchmail will kill the running daemon process and then quit.
Otherwise, fetchmail will first kill a running daemon process and then continue running with the other options. This option allows you to redirect status messages into a specified logfile follow the option with the logfile name. This is primarily useful for debugging configurations. Note that fetchmail does not detect if the logfile is rotated, the logfile is only opened once when fetchmail starts.
You need to restart fetchmail after rotating the logfile and before compressing it if applicable. The --syslog option keyword: set syslog allows you to redirect status and error messages emitted to the syslog 3 system daemon if available. This option is intended for logging status and error messages which indicate the status of the daemon and the results while fetching mail from the server s. Error messages for command line options and parsing the.
The -N or --nodetach option suppresses backgrounding and detachment of the daemon process from its control terminal. Note that while running in daemon mode polling a POP2 or IMAP2bis server, transient errors such as DNS failures or sendmail delivery refusals may force the fetchall option on for the duration of the next polling cycle.
This is a robustness feature. It means that if a message is fetched and thus marked seen by the mailserver but not delivered locally due to some transient error, it will be re-fetched during the next poll cycle. This option defaults to the user who invoked fetchmail.
Setting postmaster to the empty string causes such mail as described above to be discarded - this however is usually a bad idea. The --nobounce behaves like the "set no bouncemail" global option, which see.
The --invisible option keyword: set invisible tries to make fetchmail invisible. Normally, fetchmail behaves like any other MTA would -- it generates a Received header into each message describing its place in the chain of transmission, and tells the MTA it forwards to that the mail came from the machine fetchmail itself is running on. If the invisible option is on, the Received header is suppressed and fetchmail tries to spoof the MTA it forwards to into thinking it came directly from the mailserver host.
The --showdots option keyword: set showdots forces fetchmail to show progress dots even if the current tty is not stdout for example logfiles. Fetchmail shows the dots by default when run in nodetach mode or when daemon mode is not enabled. This header can be used to make filtering email where no useful header information is available and you want mail from different accounts sorted into different mailboxes this could, for example, occur if you have an account on the same server running a mailing list, and are subscribed to the list using that account.
Require TLSv1. This does not negotiate TLSv1. Keyword: sslcertck, default enabled since v6. The trust anchors are given as a set of local trusted certificates see the sslcertfile and sslcertpath options. If the server certificate cannot be obtained or is not signed by one of the trusted ones directly or indirectly , fetchmail will disconnect, regardless of the sslfingerprint option. Keyword: no sslcertck, only in v6. X The opposite of --sslcertck, this is a discouraged option.
It permits fetchmail to continue connecting even if the server certificate failed the verification checks. Should only be used together with --sslfingerprint. Keyword: sslcertfile, since v6.
The default is empty. This can be given in addition to --sslcertpath below, and certificates specified in --sslcertfile will be processed before those in --sslcertpath. The option can be used in addition to --sslcertpath. The file is a text file. Keyword: sslcertpath Sets the directory fetchmail uses to look up local certificates. The default is your OpenSSL default directory. Keyword: sslcommonname; since v6. Before using it, contact the administrator of your upstream server and ask for a proper SSL certificate to be used.
If that cannot be attained, this option can be used to specify the name CommonName that fetchmail expects on the server certificate. A correctly configured server will have this set to the host name by which it is reached, and by default fetchmail will expect as much. Keyword: sslfingerprint Specify the fingerprint of the server key an MD5 hash of the key in hexadecimal notation with colons separating groups of two digits.
The letter hex digits must be in upper case. This is the format that fetchmail uses to report the fingerprint when an SSL connection is established. When this is specified, fetchmail will compare the server key fingerprint with the given one, and the connection will fail if they do not match, regardless of the sslcertck setting. The connection will also fail if fetchmail cannot obtain an SSL certificate from the server.
This can be used to prevent man-in-the-middle attacks, but the finger print from the server must be obtained or verified over a secure channel, and certainly not over the same Internet connection that fetchmail would use.
Using this option will prevent printing certificate verification errors as long as --nosslcertck is in effect. To obtain the fingerprint of a certificate stored in the file cert. Keyword: smtp[host] Specify a hunt list of hosts to forward mail to one or more host names, comma-separated. Hosts are tried in list order; the first one that is up becomes the forwarding target for the current run.
Each host name may have a port number following the host name. The port number is separated from the host name by a slash; the default port is "smtp". The default is the FQDN of the machine running fetchmail.
The default user is the current local user. Please also see the NOTE about --smtpaddress and address literals above. Keyword: antispam Specifies the list of numeric SMTP errors that are to be interpreted as a spam-block response from the listener.
A value of -1 disables this option. For the command-line option, the list values should be comma-separated. Also see --softbounce default and its inverse. To avoid losing mail, use this option only with MDAs like maildrop or MTAs like sendmail that exit with a nonzero status on disk-full and other delivery errors; the nonzero status tells fetchmail that delivery failed and prevents the message from being deleted on the server.
The value of the first variable from his list that is defined even if it is empty! If none of the variables is defined, fetchmail will use the real user id it was started with.
If one of the variables was defined, but the user stated there is not found, fetchmail continues running as root, without checking remaining variables on the list.
This is one of the most frequent configuration errors! Also, do not try to combine multidrop mode with an MDA such as maildrop that can only accept one address, unless your upstream stores one copy of the message per recipient and transports the envelope recipient in a header; you will lose mail.
The proper procmail configuration is outside the scope of this document. Using maildrop 1 is usually much easier, and many users find the filter syntax used by maildrop easier to understand. Finally, we strongly advise that you do not use qmail-inject. A service host and port must be explicitly specified on each host in the smtphost hunt list see above if this option is selected; the default port 25 will in accordance with RFC not be accepted.
This special mode may be removed in a later release. Keyword: bad-header; since v6. Traditionally, fetchmail has rejected such messages, but some distributors modified fetchmail to accept them. Keyword: limit Takes a maximum octet size argument, where 0 is the default and also the special value designating "no limit".
If nonzero, messages larger than this size will not be fetched and will be left on the server in foreground sessions, the progress messages will note that they are "oversized". An explicit --limit of 0 overrides any limits set in your run control file.
This option is intended for those needing to strictly control fetch time due to expensive and variable phone rates. Combined with --limitflush, it can be used to delete oversized messages waiting on a server.
In daemon mode, oversize notifications are mailed to the calling user see the --warnings option.
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