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Diffstat (limited to 'src/mail/ngx_mail_smtp_module.c')
-rw-r--r--src/mail/ngx_mail_smtp_module.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/mail/ngx_mail_smtp_module.c b/src/mail/ngx_mail_smtp_module.c
index 5f5ac0567..71ba3fd9a 100644
--- a/src/mail/ngx_mail_smtp_module.c
+++ b/src/mail/ngx_mail_smtp_module.c
@@ -158,6 +158,15 @@ ngx_mail_smtp_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
cscf = ngx_mail_conf_get_module_srv_conf(cf, ngx_mail_core_module);
+ if (cscf->protocol->type == NGX_MAIL_SMTP_PROTOCOL
+ && cscf->resolver == NULL)
+ {
+ ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
+ "undefined resolver for server in %s:%ui",
+ cscf->file_name, cscf->line);
+ return NGX_CONF_ERROR;
+ }
+
size = sizeof("220 ESMTP ready" CRLF) - 1 + cscf->server_name.len;
p = ngx_palloc(cf->pool, size);