Dotaz: postfix a neznamy uzivatel

[David]

Hoj,mam postfix a aliasy. Kdyz mi nekdo posle email na neznamy_alias@mojedomena.net, postfix se do nekonecna snazi email dorucit.. Jak tohle osetrit? Asi bych chtel nejakou auto odpoved, ze tento mail neexistuje a vsechny nesmyslne aliasy pred @ dosly treba na roota. Jak na to?

Odpovědi

[svaca]

Lepsi by bylo takove maily rovnou odmitat ... Jinak ti tu zvysuje prijem spamu ...

napr:

# The unknown_local_recipient_reject_code specifies the SMTP server  
# response code when a recipient domain matches $mydestination or 
# ${proxy,inet}_interfaces, while $local_recipient_maps is non-empty
# and the recipient address or address local-part is not found.
# 
# The default setting is 550 (reject mail) but it is safer to start  
# with 450 (try again later) until you are certain that your
# local_recipient_maps settings are OK.
# 
unknown_address_reject_code = 554
unknown_client_reject_code = 554
unknown_hostname_reject_code = 554
unknown_local_recipient_reject_code = 554
unknown_relay_recipient_reject_code = 554                          
unknown_sender_reject_code = 554
unknown_virtual_alias_reject_code = 554
unknown_virtual_mailbox_reject_code = 554
unverified_recipient_reject_code = 554
unverified_sender_reject_code = 554

Ale to co chces ty je tohle:

# The luser_relay parameter specifies an optional destination address
# for unknown recipients.  By default, mail for unknown@$mydestination,
# unknown@[$inet_interfaces] or unknown@[$proxy_interfaces] is returned
# as undeliverable.
#
# The following expansions are done on luser_relay: $user (recipient
# username), $shell (recipient shell), $home (recipient home directory),
# $recipient (full recipient address), $extension (recipient address
# extension), $domain (recipient domain), $local (entire recipient
# localpart), $recipient_delimiter. Specify ${name?value} or
# ${name:value} to expand value only when $name does (does not) exist.
# 
# luser_relay works only for the default Postfix local delivery agent.
# 
# NOTE: if you use this feature for accounts not in the UNIX password
# file, then you must specify "local_recipient_maps =" (i.e. empty) in
# the main.cf file, otherwise the SMTP server will reject mail for   
# non-UNIX accounts with "User unknown in local recipient table". 
# 
luser_relay = neco@nekam.cz

[David]

Ja prave ty maily odmitam a taky to vidim v logu. Jenomze server, kterej mi mail posila je neozbytnej a posila to porad a muj postfix odmita a odmita o odmita...

[svaca]

tak pomoci smtp restrictions zakaz posilani na ten neexistujici mail, nebo uplne zakaz tu domenu (jestli je to nejaka nesmyslna ... )

[AraxoN]

... Asi bych chtel nejakou auto odpoved, ze tento mail neexistuje ...

O tomto má odosielateľa upovedomiť jeho server, nie Tvoj. Skôr by som to videl tak, že server odosielateľa nerešpektuje RFC (a v takom prípade na neho treba hodiť bobek), alebo správy o nedoručiteľnosti na druhej strane nikto nečíta, resp. nerieši (a v takom prípade na neho treba hodiť bobek).

Snažiť sa robiť workaround okolo každej cudzej chyby je cestou do pekla. Nech si to pekne nastavia tak ako sa má, resp. nech tam zadajú správnu adresu odosielateľa, ak to chcú mať doručené.

[David]

Tak tak..dik. odesilatele jsem obeznamil s tim, ze jeho server je "problemovy" a ze domenu ignoruju... a je to ok..