From 1cbf468986aeb4d60efd96e17392f9c330c32546 Mon Sep 17 00:00:00 2001 From: Wido den Hollander Date: Sat, 9 Apr 2016 13:43:16 +0200 Subject: [PATCH] lmtp: Use port 24 if no port has been provided This allows using the LMTP, IMAP and POP3 proxy on the same Dovecot installation without the userdb providing the port to connect to. TCP port 24 is registered at IANA as: "any private mail system" LMTP being the Local Mail Transfer Protocol classifies as a private mail system and thus justifies the usage of port 24. Prior to this patch the LTMP client would connect to TCP port 0 by default if the userdb did not provide a port to connect to. --- src/lmtp/commands.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/lmtp/commands.c b/src/lmtp/commands.c index 56cb94b3fc..bb42d783d5 100644 --- a/src/lmtp/commands.c +++ b/src/lmtp/commands.c @@ -263,6 +263,8 @@ client_proxy_rcpt_parse_fields(struct lmtp_proxy_rcpt_settings *set, } else if (strcmp(key, "protocol") == 0) { if (strcmp(value, "lmtp") == 0) set->protocol = LMTP_CLIENT_PROTOCOL_LMTP; + if (!port_set) + set->port = 24; else if (strcmp(value, "smtp") == 0) { set->protocol = LMTP_CLIENT_PROTOCOL_SMTP; if (!port_set) -- 2.47.3