#0  lmtp_local_rcpt_reply_overquota (rcpt=rcpt@entry=0x55ee1015b400, error=0x55ee101835c0 "Quota exceeded (mailbox for user is full)") at lmtp-local.c:136
        address = <optimized out>
        lda_set = <optimized out>
#1  0x000055ee0dff5652 in lmtp_local_rcpt_check_quota (rcpt=0x55ee1015b400) at lmtp-local.c:231
        box = 0x55ee10176ef8
        status = {messages = 0, recent = 0, unseen = 0, uidvalidity = 0, uidnext = 0, first_unseen_seq = 0, first_recent_uid = 0, last_cached_seq = 0, highest_modseq = 0, 
          highest_pvt_modseq = 0, keywords = 0x0, permanent_flags = 0, flags = 0, permanent_keywords = false, allow_new_keywords = false, nonpermanent_modseqs = false, 
          no_modseq_tracking = false, have_guids = true, have_save_guids = true, have_only_guid128 = false}
        mail_error = MAIL_ERROR_NOQUOTA
        ret = <optimized out>
        client = <optimized out>
        address = 0x55ee10150770
        user = 0x55ee101613e8
        ns = <optimized out>
        error = 0x55ee101835c0 "Quota exceeded (mailbox for user is full)"
#2  lmtp_local_rcpt_anvil_finish (rcpt=rcpt@entry=0x55ee1015b400) at lmtp-local.c:287
        cmd = 0x55ee10150638
#3  0x000055ee0dff5bf8 in lmtp_local_rcpt (client=client@entry=0x55ee10135aa8, cmd=cmd@entry=0x55ee10150638, data=data@entry=0x55ee10150728, username=<optimized out>, 
    detail=0x7f6aa397e4c8 "") at lmtp-local.c:400
        conn = <optimized out>
        address = 0x55ee10150770
        trans = <optimized out>
        rcpt = 0x55ee1015b400
        input = {parent_event = 0x0, module = 0x55ee0dff7dc3 "lmtp", service = 0x55ee0dff7dc3 "lmtp", username = 0x55ee100f4210 "USERNAME@example.com", 
          session_id = 0x55ee10150af0 "pWtqHtE7X1rqEwAASpDaHg", session_id_prefix = 0x0, session_create_time = 0, local_ip = {family = 2, u = {ip6 = {__in6_u = {
                  __u6_addr8 = "\223z\v\205", '\000' <repeats 11 times>, __u6_addr16 = {31379, 34059, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {2232122003, 0, 0, 0}}}, ip4 = {
                s_addr = 2232122003}}}, remote_ip = {family = 2, u = {ip6 = {__in6_u = {__u6_addr8 = "\223z\030.", '\000' <repeats 11 times>, __u6_addr16 = {31379, 11800, 
                    0, 0, 0, 0, 0, 0}, __u6_addr32 = {773356179, 0, 0, 0}}}, ip4 = {s_addr = 773356179}}}, local_port = 24, remote_port = 47292, userdb_fields = 0x0, 
Missing separate debuginfos, use: debuginfo-install cyrus-sasl-lib-2.1.26-21.el7.x86_64 dovecot-pigeonhole-2.3.0-4.x86_64 glibc-2.17-196.el7_4.2.x86_64 keyutils-libs-1.5.8-3.el7.x86_64 krb5-libs-1.15.1-8.el7.x86_64 libcom_err-1.42.9-10.el7.x86_64 libselinux-2.5-11.el7.x86_64 nspr-4.13.1-1.0.el7_3.x86_64 nss-3.28.4-15.el7_4.x86_64 nss-softokn-freebl-3.28.3-8.el7_4.x86_64 nss-util-3.28.4-3.el7.x86_64 openldap-2.4.44-5.el7.x86_64 openssl-libs-1.0.2k-8.el7.x86_64 pcre-8.32-17.el7.x86_64 zlib-1.2.7-17.el7.x86_64
          flags_override_add = (unknown: 0), flags_override_remove = (unknown: 0), no_userdb_lookup = false, debug = false, conn_secured = true, conn_ssl_secured = false}
        service_user = 0x55ee10150dc8
        session_id = 0x55ee10150af0 "pWtqHtE7X1rqEwAASpDaHg"
        error = 0x0
        ret = <optimized out>
        __func__ = "lmtp_local_rcpt"
#4  0x000055ee0dff4eb9 in cmd_rcpt (conn_ctx=0x55ee10135aa8, cmd=0x55ee10150638, data=0x55ee10150728) at commands.c:66
        client = 0x55ee10135aa8
        username = 0x55ee100f4210 "USERNAME@example.com"
        detail = 0x7f6aa397e4c8 ""
        delim = 0 '\000'
        ret = <optimized out>
#5  0x00007f6aa38b0baf in smtp_server_cmd_rcpt (cmd=0x55ee10150638, params=0x55ee1010eba5 "") at smtp-server-cmd-rcpt.c:181
        conn = 0x55ee1014be50
        set = 0x55ee1014bf10
        caps = (SMTP_CAPABILITY_STARTTLS | SMTP_CAPABILITY_PIPELINING | SMTP_CAPABILITY_ENHANCEDSTATUSCODES | SMTP_CAPABILITY_8BITMIME | SMTP_CAPABILITY_CHUNKING)
        callbacks = 0x55ee0e1f9720 <lmtp_callbacks>
        command = 0x55ee10150638
        rcpt_data = 0x55ee10150728
        path = 0x55ee100f41c8
        pperror = SMTP_PARAM_PARSE_ERROR_BAD_SYNTAX
        error = 0x0
        ret = <optimized out>
        __func__ = "smtp_server_cmd_rcpt"
#6  0x00007f6aa38b4cc9 in smtp_server_command_new (conn=0x55ee1014be50, name=name@entry=0x55ee1010eb70 "RCPT", params=params@entry=0x55ee1010eb90 "TO:<USERNAME@example.com>")
    at smtp-server-command.c:235
        tmp_cmd = 0x55ee10150638
        server = 0x55ee1010e768
        cmd = 0x55ee10150638
        __func__ = "smtp_server_command_new"
#7  0x00007f6aa38b6fbf in smtp_server_connection_handle_command (cmd_params=0x55ee1010eb90 "TO:<USERNAME@example.com>", cmd_name=0x55ee1010eb70 "RCPT", conn=0x55ee1014be50)
    at smtp-server-connection.c:341
        tmp_conn = 0x55ee1014be50
        cmd = <optimized out>
#8  smtp_server_connection_handle_input (conn=0x55ee1014be50) at smtp-server-connection.c:436
        pending_command = 0x0
        error_code = SMTP_COMMAND_PARSE_ERROR_NONE
        cmd_name = 0x55ee1010eb70 "RCPT"
        ret = 1
        cmd_params = 0x55ee1010eb90 "TO:<USERNAME@example.com>"
        error = 0x0
#9  smtp_server_connection_input (_conn=<optimized out>) at smtp-server-connection.c:579
        conn = 0x55ee1014be50
        __func__ = "smtp_server_connection_input"
#10 0x00007f6aa39432b5 in io_loop_call_io (io=0x55ee10109780) at ioloop.c:614
        ioloop = 0x55ee100fcc80
        t_id = 2
        __func__ = "io_loop_call_io"
#11 0x00007f6aa3944b5f in io_loop_handler_run_internal (ioloop=ioloop@entry=0x55ee100fcc80) at ioloop-epoll.c:222
        ctx = 0x55ee101031c0
        events = <optimized out>
        list = 0x55ee10135100
        io = <optimized out>
        tv = {tv_sec = 299, tv_usec = 999674}
        events_count = <optimized out>
        msecs = <optimized out>
        ret = 1
        i = 0
        call = <optimized out>
        __func__ = "io_loop_handler_run_internal"
#12 0x00007f6aa39433b2 in io_loop_handler_run (ioloop=ioloop@entry=0x55ee100fcc80) at ioloop.c:666
        __func__ = "io_loop_handler_run"
#13 0x00007f6aa39435d8 in io_loop_run (ioloop=0x55ee100fcc80) at ioloop.c:639
        __func__ = "io_loop_run"
#14 0x00007f6aa38c1b23 in master_service_run (service=0x55ee100fcb10, callback=callback@entry=0x55ee0dff43d0 <client_connected>) at master-service.c:767
No locals.
#15 0x000055ee0dff41a6 in main (argc=1, argv=0x55ee100fc890) at main.c:159
        set_roots = {0x7f6aa3bcbfc0 <smtp_submit_setting_parser_info>, 0x7f6aa412cba0 <lda_setting_parser_info>, 0x55ee0e1f9560 <lmtp_setting_parser_info>, 0x0}
        service_flags = <optimized out>
        storage_service_flags = <optimized out>
        tmp_base_dir = 0x55ee100f4040 "\003"
        c = <optimized out>
        error = 0x0