[求助]这段日志是什么意思？

vagrant

2005-09-02 02:04:59 *** *** EHLO +*** 250 326 18<br>
2005-09-02 02:04:59 *** *** MAIL +From:<**@***> 250 49 48<br>
2005-09-02 02:04:59 *** *** RCPT +To:<**@***> 250 0 32<br>
2005-09-02 02:04:59 *** *** RCPT +To:<**@***> 250 0 31<br>
2005-09-02 02:04:59 *** *** DATA +<006001c5af63$2aa7a4a0$83c0de3d@**.local> 250 133 4072<br>
2005-09-02 02:05:02 *** *** mdkznjgyodazmaoaadk0mdiwmdmwnzyfaagxzw5mrk46ikbiawab1l4mwy2gcwaamdqtmjuzmjc4 - 500 32 76<br>
2005-09-02 02:05:02 *** *** mjakaaa5ndaymdawmtgybgabcwf2wydzt186ikbiawab/myozyvmcgaamdkznji5njyymqoaadk0 - 500 32 76<br>
2005-09-02 02:05:02 *** *** mdiwmdmwndkhaaelv0lrz1fsudf5oopaygmaacoempb+zwsaada0lti1njcwodk2cgaamdkznjk1 - 500 32 76<br>
2005-09-02 02:05:02 *** *** nta0oaoaadk0mdiwmdi3odmdaafyb8b57oqlaaawnc0yntm4odi3maoaadk0mdiwmdi3odidaahd - 500 32 76<br>
2005-09-02 02:05:02 *** *** nljxfpclaaawnc0yntywnjgwnwoaada5ntgzmtc4mzgkaaa5ndaymdaynzgxawabc5b7btnxcwaa - 500 32 76<br>
2005-09-02 02:05:02 *** *** mdqtmju2nju3mtykaaa5ndaymdawnzqwawabtme+ficlcgaamdqtnzg3mzeymasaada0lti1nje5 - 500 32 76<br>
2005-09-02 02:05:02 *** *** mzmwcgaamdkznjk1odi1mqoaadk0mdiwmdewmdeeaagnn4lboopaygmaaxowi5dbdgsaada0lti2 - 500 32 76<br>
2005-09-02 02:05:02 *** *** mzk3mjezcgaaotqwmjawmtc5nqmaazdn+l6xwwoaada5mzcymduynzckaaa5ndaymdawndu1awab - 500 32 76<br>
2005-09-02 02:05:02 *** *** ah2uafnscwaamdqtmji3otc5njakaaa5ndaymdawmdk0awabkm0dz+tycgaamdqtodm2nda0mwoa - 500 32 76<br>
2005-09-02 02:05:02 *** *** adk0mdiwmde5ndudaahdnjudkvakaaawnc03nzg4ntmycgaamdk1mju3ndcxmqoaadk0mdiwmde3 - 500 32 76<br>
2005-09-02 02:05:02 *** *** njcdaaf5irdfciakaaawnc04otc1mtc1cgaaotqwmjawmdgymacaafbsivtmwij10xk6ikbiawab - 500 32 76<br>
2005-09-02 02:05:02 *** *** 1l5edi2fcwaamdq5ltizmzi3nzykaaawotmxnte4mze1cgaaotqwmjawmdg3nauaau+ymh2xwzqk - 500 32 76<br>
2005-09-02 02:05:02 *** *** qgidaagxz/b/up8kaaawns02mziwmdy4cgaaotqwmjawmtcxngmaab1ljz/bmaoaada1ltm3ntu1 - 500 32 76<br>
2005-09-02 02:05:02 *** *** ntikaaa5ndaymdaxnze3awabamz1bcttcgaaotqwmjawmdeyngmaafsmh2uykaoaada2ltc4mjm5 - 500 32 76<br>
2005-09-02 02:05:02 *** *** mzikaaa5ndaymdawmti0awabafrvzsxbcgaamdytnzgzmzk4mqoaadk0mdiwmdaxmjudaagkg8pp - 500 32 76<br>
2005-09-02 02:05:02 *** *** kvakaaawni03odm1njg3cgaamdkzmzy5nzg4nwoaadk0mdiwmde4mzedaag5zwv5f3kkaaawni02 - 500 32 76<br>
2005-09-02 02:05:02 *** *** otkznjq2cgaamdkzodq2ntqzoaoaadk0mdiwmdi4odedaafzljkqfhykaaawni01otmzmdu1cgaa - 500 32 76<br>
2005-09-02 02:05:02 *** *** otqwmjawmdqynwmaazdnsodovwoaada5mzi3nza2ntckaaa5ndaymdawode1bwabr08jvu5pz1hr - 500 32 76<br>
2005-09-02 02:05:02 *** *** etqkqgidaagxz1aakg4kaaawni0yndi2odqycgaamdk1njayntexmqoaadk0mdiwmdiwmzqdaahw - 500 32 76<br>
2005-09-02 02:05:02 *** *** xipzc14kaaawny03njywntixcgaaotqwmjawmdy3nqmaavhvx1uozgoaada3ltc0njm5njekaaa5 - 500 32 76<br>
2005-09-02 02:05:02 *** *** ndaymdawmjiybqabw55qw7kaoopaygmaau+ydp8mzgoaada3ltyymzi3otekaaawny02mje1mjiy - 500 32 76<br>
2005-09-02 02:05:02 *** *** cgaamdk1ntmznti2ngoaadk0mdiwmdizndgdaaglc0jodf4kaaawny03mdi3mji0cgaaotqwmjaw - 500 32 76<br>
2005-09-02 02:05:02 *** *** mta2mqmaacoehy8cwaoaada3ltc4mzuyntukaaa5ndaymdaynjexcqabj1l2ybzbq5hrerzz0xk6 - 500 32 76<br>
2005-09-02 02:05:02 *** *** ikbiawabxgd2ue5pcgaamdg5ltm0odc5oaoaada5mzyynti2otukaaa5ndaymdawnja4awabi3o7 - 500 32 76<br>
2005-09-02 02:05:02 *** *** bhnecgaamdkzodk0nzyxnwoaadk0mdiwmdi0mjaiaahymsswal7lehfsh3wrkwkwawabl2eygghr - 500 32 76<br>
2005-09-02 02:05:02 *** *** cgaamdctnzkyoti4mgoaada3lti4ntg4ntakaaawotywmza0mdqwcgaaotqwmjawmtg0mqmaayqd - 500 32 76<br>
2005-09-02 02:05:02 *** *** l2miggsaadaylti0mju5nze5cwaamditody0nzixotikaaawotmymdcxnji5cgaaotqwmjawmti0 - 500 32 76<br>
2005-09-02 02:05:02 *** *** maoaauyip2villuih3vyfwlwqx+rkwkwawabw57jzu+wcgaamdkxote0ntgyoaoaadk0mdiwmdez - 500 32 76<br>
2005-09-02 02:05:02 *** *** nzidaagkg2twlu4kaaawmy05mji1nzmwcgaaotqwmjawmtg4mwmaae+d4f9qjaoaada5mzm1njuw - 500 50 76<br>
2005-09-02 02:05:02 *** *** QUIT *** 240 50 76<br>
上面一段日志什么意思？？

vagrant

有很多这样的日志，不知道是什么意思？