Greetings, someone made this statement to me:
| The MTA will record the IP address of the server that sent the message. | However, under some circumstances the MTA is not able to find that IP address. how would i verify that my MTA is finding the IP? (this may explain a lot of my issues. if postfix really isn't getting the IP, then that means something. but i've been checking name service issues by looking at the DNS tables and dig/nslookup. i'm told i can determine this question by looking at the maillog. but i don't know what i'm looking for.) outside IP = 66.162.93.34 inside IP = 146.6.211.34 I have a split view of DNS on both of my outside the firewall mail servers. i have two IPs configured on the server. an nslookup (and dig) both return the IP that is "outside the firewall". here is a snippet of the maillog. Feb 27 00:40:10 ns4 postfix/pickup[15918]: 02A8E1D62BC: uid=0 from=<root> Feb 27 00:40:10 ns4 postfix/cleanup[16076]: 02A8E1D62BC: message-id=<20120227064010.02a8e1d6...@ns4.arlut.utexas.edu> Feb 27 00:40:10 ns4 postfix/qmgr[18269]: 02A8E1D62BC: from=<r...@arlut.utexas.edu>, size=1105, nrcpt=1 (queue active) Feb 27 00:40:10 ns4 postfix/cleanup[16111]: 7DAA51D62B0: message-id=<6921_1330324810_4f4b254a_6921_1798_1_20120227064010.02a8e1d6...@ns4.arlut.utexas.edu> Feb 27 00:40:10 ns4 postfix/smtp[16078]: 02A8E1D62BC: to=<g...@arlut.utexas.edu>, relay=127.0.0.1[127.0.0.1]:10025, delay=0.62, delays=0.07/0/0/0.55, dsn=2.0.0, status=sent (250 OK, sent 4F4B254A_6921_1798_1 7DAA51D62B0) Feb 27 00:40:10 ns4 postfix/qmgr[18269]: 02A8E1D62BC: removed Feb 27 15:01:38 ns4 postfix/pickup[3008]: 06BB11D62CF: uid=0 from=<root> Feb 27 15:01:38 ns4 postfix/cleanup[2193]: 06BB11D62CF: message-id=<20120227210138.06bb11d6...@ns4.arlut.utexas.edu> Feb 27 15:01:38 ns4 postfix/qmgr[18269]: 06BB11D62CF: from=<r...@arlut.utexas.edu>, size=540, nrcpt=1 (queue active) Feb 27 15:01:38 ns4 postfix/smtp[2025]: 06BB11D62CF: to=<g...@arlut.utexas.edu>, orig_to=<gl>, relay=127.0.0.1[127.0.0.1]:10025, delay=0.43, delays=0.12/0/0/0.3, dsn=2.0.0, status=sent (250 OK, sent 4F4BEF32_2970_3_1 ) Feb 27 15:01:38 ns4 postfix/qmgr[18269]: 06BB11D62CF: removed Feb 27 11:01:17 ns4 postfix/pickup[26352]: 11F551D62C6: uid=0 from=<root> Feb 27 11:01:17 ns4 postfix/cleanup[28425]: 11F551D62C6: message-id=<20120227170117.11f551d6...@ns4.arlut.utexas.edu> Feb 27 11:01:17 ns4 postfix/qmgr[18269]: 11F551D62C6: from=<r...@arlut.utexas.edu>, size=310, nrcpt=1 (queue active) Feb 27 11:01:17 ns4 postfix/cleanup[28201]: 2D0EF1D62C5: message-id=<20120227170117.11f551d6...@ns4.arlut.utexas.edu> Feb 27 11:01:17 ns4 postfix/smtp[28044]: 11F551D62C6: to=<g...@arlut.utexas.edu>, relay=127.0.0.1[127.0.0.1]:10025, delay=0.21, delays=0.06/0/0/0.15, dsn=2.0.0, status=sent (250 OK, sent 4F4BB6DD_28624_3_1 2D0EF1D62C5) Feb 27 11:01:17 ns4 postfix/qmgr[18269]: 11F551D62C6: removed Feb 27 07:39:03 ns4 postfix/smtpd[22889]: 1B4831D62B0: client=unknown[41.248.118.66] Feb 27 07:39:03 ns4 postfix/cleanup[23237]: 1B4831D62B0: message-id=<006001ccf555$d0781e20$71685a60$@com> Feb 27 07:39:03 ns4 postfix/qmgr[18269]: 1B4831D62B0: from=<withholdimpalpa...@nicetourisme.com>, size=5855, nrcpt=1 (queue active) -- Jay Scott 512-835-3553 g...@arlut.utexas.edu Head of Sun Support, Sr. System Administrator Applied Research Labs, Computer Science Div. S224 University of Texas at Austin
