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Chapter 16. Email 211

methods that do not require a password, then methods that mask your password, and ﬁnally attempt

to send your password in the clear to authenticate to the server.

• interval

number — Tells Fetchmail to only poll this server every number of times that

it checks for email on all conﬁgured servers. This option might be used with email servers where

you rarely receive messages.

• port

port-number — Overrides the default port number for a speciﬁed protocol.

• proto protocol — Tells Fetchmail to use a speciﬁc protocol, such as pop3 or imap, to check

for messages on this server.

• timeout

seconds — Conﬁgures Fetchmail to give up after a certain interval of server inac-

tivity. If this value is not set, a default of 300 seconds is assumed.

16.4.1.3. User Options

User options may be placed on their own lines beneath a server option or on the same line as the server

option. In either case, the user options follow the user option (deﬁned below).

• fetchall — Orders Fetchmail to download all messages in the queue, including messages that

have already been viewed. By default, Fetchmail only pulls down new messages.

• fetchlimit

number — Only allows a certain number of messages to be retrieved before

stopping.

• flush — Tells Fetchmail to delete all previously viewed messages in the queue before retrieving

new messages.

• limit

max-number-bytes — Allows you to specify that only messages below a particular

size may be retrieved. This option is useful with slow network links, when a large message will take

too long to download.

• password ’ password ’ — Speciﬁes the password to be used for this user.

• preconnect " command " — Tells Fetchmail to execute the speciﬁed command before retriev-

ing messages for this user.

• postconnect "

command " — Tells Fetchmail to execute the speciﬁed command after retriev-

ing messages for this user.

• ssl — Allows Fetchmail to collect the message via an encrypted SSL connection, if the server

supports this.

• user " username " — Sets the username used by Fetchmail to retrieve messages. This option

should be listed before any other user options.

16.4.2. Fetchmail Command Options

Most of the Fetchmail options that may be used on the command line, when executing the fetchmail

command, mirror the .fetchmailrc conﬁguration options. This is done so that Fetchmail may be

used with or without a conﬁguration ﬁle. Most users will not use these options on the command line,

as it is easier to leave them in the .fetchmailrc ﬁle to be utilized whenever Fetchmail is run.

However, there are times when you may want to run the fetchmail command with other options for

a particular purpose. As any options speciﬁed at the command line override conﬁguration ﬁle options,

you can also issue command options to temporarily override a .fetchmailrc setting that is causing

an error.

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