I just got a mail delivery error from another MTA: <xxxxx@xxxxxxx.xx>: host xxxx xxxxxxx.xx[123.12.123.12] refused to talk to me: 501-HELO requires a valid host name as operand: 'albatross.madduck.net' 501-connection rejected from debian4.unizh.ch remote address [130.60.73.144]. 501-Reason given was: 501- No reverse DNS PTR for the remote address [130.60.73.144] has a 501 hostname matching 'albatross.madduck.net' 130.60.73.144 is my mailout server, which has a PTR record to debian4.unizh.ch, which resolves back to that IP. since this is a virtual setup, the same IP also services albatross.madduck.net. in this case, the HELO name used was albatross.madduck.net, which the other MTA refused. is it just me, or is this overly paranoid, and possibly even wrong? is there any document that specifies that I have to have a PTR record for every A record? my belief is that multiple PTR records have little purpose. am i wrong? -- martin; (greetings from the heart of the sun.) \____ echo mailto: !#^."<*>"|tr "<*> mailto:"; net@madduck keyserver problems? http://keyserver.kjsl.com/~jharris/keyserver.html get my key here: http://madduck.net/me/gpg/publickey there's an old proverb that says just about whatever you want it to.
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