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Patching exim4.conf for: Helo name contains a ip address

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myvesta 2023-10-01 15:07:43 +02:00 • committed by GitHub
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1 changed files with 6 additions and 3 deletions
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9
install/debian/12/exim/exim4.conf.template
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@ -109,16 +109,19 @@ acl_check_mail:
deny condition = ${if eq{$sender_helo_name}{}}
message = HELO required before MAIL
drop message = Helo name contains a ip address (HELO was $sender_helo_name) and not is valid
drop !authenticated = *
message = Helo name contains a ip address (HELO was $sender_helo_name) and not is valid
condition = ${if match{$sender_helo_name}{\N((\d{1,3}[.-]\d{1,3}[.-]\d{1,3}[.-]\d{1,3})|([0-9a-f]{8})|([0-9A-F]{8}))\N}{yes}{no}}
condition = ${if match{${lc:$sender_host_name}}{.telenor.rs}{false}{true}}
condition = ${if match {${lookup dnsdb{>: defer_never,ptr=$sender_host_address}}\}{$sender_helo_name}{no}{yes}}
delay = 45s
drop condition = ${if isip{$sender_helo_name}}
drop !authenticated = *
condition = ${if isip{$sender_helo_name}}
message = Access denied - Invalid HELO name (See RFC2821 4.1.3)
drop condition = ${if eq{[$interface_address]}{$sender_helo_name}}
drop !authenticated = *
condition = ${if eq{[$interface_address]}{$sender_helo_name}}
message = $interface_address is _my_ address
accept