diff options
Diffstat (limited to 'src/smtp/smtp_addr.c')
| -rw-r--r-- | src/smtp/smtp_addr.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/smtp/smtp_addr.c b/src/smtp/smtp_addr.c index 5e23388..f30ce73 100644 --- a/src/smtp/smtp_addr.c +++ b/src/smtp/smtp_addr.c @@ -179,10 +179,10 @@ static DNS_RR *smtp_addr_one(DNS_RR *addr_list, const char *host, int res_opt, if ((addr = dns_sa_to_rr(host, pref, res0->ai_addr)) == 0) msg_fatal("host %s: conversion error for address family " "%d: %m", host, res0->ai_addr->sa_family); - addr_list = dns_rr_append(addr_list, addr); addr->pref = pref; addr->port = port; - if (msg_verbose) + addr_list = dns_rr_append(addr_list, addr); + if (msg_verbose && !DNS_RR_IS_TRUNCATED(addr_list)) msg_info("%s: using numerical host %s", myname, host); freeaddrinfo(res0); return (addr_list); @@ -262,6 +262,8 @@ static DNS_RR *smtp_addr_one(DNS_RR *addr_list, const char *host, int res_opt, msg_fatal("host %s: conversion error for address family " "%d: %m", host, res0->ai_addr->sa_family); addr_list = dns_rr_append(addr_list, addr); + if (DNS_RR_IS_TRUNCATED(addr_list)) + break; if (msg_verbose) { MAI_HOSTADDR_STR hostaddr_str; @@ -327,6 +329,8 @@ static DNS_RR *smtp_addr_list(DNS_RR *mx_names, DSN_BUF *why) msg_panic("smtp_addr_list: bad resource type: %d", rr->type); addr_list = smtp_addr_one(addr_list, (char *) rr->data, res_opt, rr->pref, rr->port, why); + if (addr_list && DNS_RR_IS_TRUNCATED(addr_list)) + break; } return (addr_list); } @@ -421,6 +425,13 @@ static DNS_RR *smtp_balance_inet_proto(DNS_RR *addr_list, int misc_flags, */ /* + * Ensure that dns_rr_append() won't interfere with the protocol + * balancing goals. + */ + if (addr_limit > var_dns_rr_list_limit) + addr_limit = var_dns_rr_list_limit; + + /* * Count the number of IPv6 and IPv4 addresses. */ for (v4_count = v6_count = 0, rr = addr_list; rr != 0; rr = rr->next) { |