Today Xeams was stopped, it had to process 20K E-mails from an single IP from Spain 77 IP Address see screenshots. Those Mails are not pointed to E-mail addresses for my Exchange "Accepted Domains" policy. Somehow Xeams has 'forwarded' those 20K E-mails to the exchange server. The Exchange server (I'm unsure why) starts trying to send the 20K mails to the internet. A smart Host SMTP connecto5r from my provider intercepted and stopped the SPAM spreading.
Exchange Spam
My Question, why did those 20K messages went trough XEAMS to the Exchange server? Most of the time Xeams stops and filters / labels Spam perfectly.. Where can I look?
Best Regards Tom
Below a conversation logs/SMTPOuboundConversation.log from Xeams to Exchange
2018-08-27 12:54:41,640 - [ 102341] C --> 250-AUTH 2018-08-27 12:54:41,640 - [ 102341] C --> 250-8BITMIME 2018-08-27 12:54:41,640 - [ 102341] C --> 250-BINARYMIME 2018-08-27 12:54:41,640 - [ 102341] C --> 250 CHUNKING 2018-08-27 12:54:41,640 - [ 102341] S 220 W12-Exchange.odb.local Microsoft ESMTP MAIL Service ready at Mon, 27 Aug 2018 12:56:18 +0200 2018-08-27 12:54:41,641 - [ 102340] ************ New (secure) connection to: 192.168.5.13 2018-08-27 12:54:41,642 - [ 102335] C --> 220 2.0.0 SMTP server ready 2018-08-27 12:54:41,642 - [ 102341] C --> 220 2.0.0 SMTP server ready 2018-08-27 12:54:41,642 - [ 102335] ************ New (secure) connection to: 192.168.5.13 2018-08-27 12:54:41,643 - [ 102340] S 250-W12-Exchange.odb.local Hello [192.168.5.145] 2018-08-27 12:54:41,647 - [ 102342] C --> 250-SIZE 36700160 2018-08-27 12:54:41,647 - [ 102342] C --> 250-PIPELINING 2018-08-27 12:54:41,647 - [ 102342] C --> 250-DSN 2018-08-27 12:54:41,647 - [ 102342] C --> 250-ENHANCEDSTATUSCODES 2018-08-27 12:54:41,647 - [ 102342] C --> 250-STARTTLS 2018-08-27 12:54:41,647 - [ 102342] C --> 250-AUTH 2018-08-27 12:54:41,647 - [ 102342] C --> 250-8BITMIME 2018-08-27 12:54:41,647 - [ 102342] C --> 250-BINARYMIME 2018-08-27 12:54:41,647 - [ 102342] C --> 250 CHUNKING 2018-08-27 12:54:41,647 - [ 102342] S 220 2.0.0 SMTP server ready 2018-08-27 12:54:41,649 - [ 102342] ************ New (secure) connection to: 192.168.5.13 2018-08-27 12:54:41,650 - [ 102342] S 250-W12-Exchange.odb.local Hello [192.168.5.145] 2018-08-27 12:54:41,951 - [ 102339] C --> 250-SIZE 36700160 2018-08-27 12:54:41,951 - [ 102339] C --> 250-PIPELINING 2018-08-27 12:54:41,951 - [ 102339] C --> 250-DSN 2018-08-27 12:54:41,951 - [ 102339] C --> 250-ENHANCEDSTATUSCODES 2018-08-27 12:54:41,951 - [ 102339] C --> 250-AUTH 2018-08-27 12:54:41,951 - [ 102339] C --> 250-8BITMIME 2018-08-27 12:54:41,951 - [ 102339] C --> 250-BINARYMIME 2018-08-27 12:54:41,951 - [ 102339] C --> 250 CHUNKING 2018-08-27 12:54:41,951 - [ 102339] S 2018-08-27 12:54:41,951 - [ 102334] C --> 250-W12-Exchange.odb.local Hello [192.168.5.145] 2018-08-27 12:54:41,951 - [ 102334] C --> 250-SIZE 36700160 2018-08-27 12:54:41,951 - [ 102334] C --> 250-PIPELINING 2018-08-27 12:54:41,951 - [ 102342] C --> 250-W12-Exchange.odb.local Hello [192.168.5.145] 2018-08-27 12:54:41,951 - [ 102342] C --> 250-SIZE 36700160 2018-08-27 12:54:41,951 - [ 102334] C --> 250-DSN 2018-08-27 12:54:41,951 - [ 102334] C --> 250-ENHANCEDSTATUSCODES 2018-08-27 12:54:41,951 - [ 102334] C --> 250-AUTH 2018-08-27 12:54:41,951 - [ 102334] C --> 250-8BITMIME 2018-08-27 12:54:41,951 - [ 102341] C --> 250-W12-Exchange.odb.local Hello [192.168.5.145] 2018-08-27 12:54:41,951 - [ 102341] C --> 250-SIZE 36700160 2018-08-27 12:54:41,951 - [ 102341] C --> 250-PIPELINING 2018-08-27 12:54:41,951 - [ 102341] C --> 250-DSN 2018-08-27 12:54:41,951 - [ 102341] C --> 250-ENHANCEDSTATUSCODES 2018-08-27 12:54:41,951 - [ 102341] C --> 250-AUTH 2018-08-27 12:54:41,951 - [ 102341] C --> 250-8BITMIME 2018-08-27 12:54:41,951 - [ 102341] C --> 250-BINARYMIME 2018-08-27 12:54:41,951 - [ 102341] C --> 250 CHUNKING 2018-08-27 12:54:41,951 - [ 102341] S 2018-08-27 12:54:41,951 - [ 102337] C --> 250-W12-Exchange.odb.local Hello [192.168.5.145] 2018-08-27 12:54:41,951 - [ 102337] C --> 250-SIZE 36700160 2018-08-27 12:54:41,951 - [ 102337] C --> 250-PIPELINING 2018-08-27 12:54:41,951 - [ 102337] C --> 250-DSN 2018-08-27 12:54:41,951 - [ 102337] C --> 250-ENHANCEDSTATUSCODES 2018-08-27 12:54:41,951 - [ 102337] C --> 250-AUTH 2018-08-27 12:54:41,951 - [ 102337] C --> 250-8BITMIME 2018-08-27 12:54:41,952 - [ 102337] C --> 250-BINARYMIME 2018-08-27 12:54:41,952 - [ 102337] C --> 250 CHUNKING 2018-08-27 12:54:41,952 - [ 102337] S 2018-08-27 12:54:41,952 - [ 102336] C --> 250-W12-Exchange.odb.local Hello [192.168.5.145] 2018-08-27 12:54:41,952 - [ 102336] C --> 250-SIZE 36700160 2018-08-27 12:54:41,952 - [ 102336] C --> 250-PIPELINING 2018-08-27 12:54:41,952 - [ 102336] C --> 250-DSN 2018-08-27 12:54:41,952 - [ 102336] C --> 250-ENHANCEDSTATUSCODES 2018-08-27 12:54:41,952 - [ 102336] C --> 250-AUTH 2018-08-27 12:54:41,952 - [ 102336] C --> 250-8BITMIME 2018-08-27 12:54:41,952 - [ 102336] C --> 250-BINARYMIME 2018-08-27 12:54:41,952 - [ 102336] C --> 250 CHUNKING 2018-08-27 12:54:41,952 - [ 102336] S 2018-08-27 12:54:41,951 - [ 102342] C --> 250-PIPELINING 2018-08-27 12:54:41,952 - [ 102342] C --> 250-DSN 2018-08-27 12:54:41,952 - [ 102342] C --> 250-ENHANCEDSTATUSCODES 2018-08-27 12:54:41,952 - [ 102342] C --> 250-AUTH 2018-08-27 12:54:41,952 - [ 102342] C --> 250-8BITMIME 2018-08-27 12:54:41,952 - [ 102342] C --> 250-BINARYMIME 2018-08-27 12:54:41,952 - [ 102342] C --> 250 CHUNKING 2018-08-27 12:54:41,952 - [ 102342] S 2018-08-27 12:54:41,952 - [ 102339] C --> 250 2.1.0 Sender OK 2018-08-27 12:54:41,952 - [ 102339] S 2018-08-27 12:54:41,952 - [ 102338] C --> 250-W12-Exchange.odb.local Hello [192.168.5.145] 2018-08-27 12:54:41,952 - [ 102338] C --> 250-SIZE 36700160 2018-08-27 12:54:41,952 - [ 102338] C --> 250-PIPELINING 2018-08-27 12:54:41,952 - [ 102338] C --> 250-DSN 2018-08-27 12:54:41,952 - [ 102338] C --> 250-ENHANCEDSTATUSCODES 2018-08-27 12:54:41,952 - [ 102338] C --> 250-AUTH 2018-08-27 12:54:41,952 - [ 102338] C --> 250-8BITMIME 2018-08-27 12:54:41,952 - [ 102338] C --> 250-BINARYMIME 2018-08-27 12:54:41,952 - [ 102338] C --> 250 CHUNKING 2018-08-27 12:54:41,952 - [ 102338] S 2018-08-27 12:54:41,952 - [ 102341] C --> 250 2.1.0 Sender OK 2018-08-27 12:54:41,952 - [ 102341] S 2018-08-27 12:54:41,953 - [ 102337] C --> 250 2.1.0 Sender OK 2018-08-27 12:54:41,953 - [ 102337] S 2018-08-27 12:54:41,953 - [ 102336] C --> 250 2.1.0 Sender OK 2018-08-27 12:54:41,951 - [ 102334] C --> 250-BINARYMIME 2018-08-27 12:54:41,953 - [ 102336] S 2018-08-27 12:54:41,953 - [ 102342] C --> 250 2.1.0 Sender OK 2018-08-27 12:54:41,953 - [ 102342] S 2018-08-27 12:54:41,953 - [ 102334] C --> 250 CHUNKING 2018-08-27 12:54:41,953 - [ 102334] S 2018-08-27 12:54:41,953 - [ 102338] C --> 250 2.1.0 Sender OK 2018-08-27 12:54:41,953 - [ 102338] S 2018-08-27 12:54:41,953 - [ 102336] C --> 250 2.1.5 Recipient OK 2018-08-27 12:54:41,954 - [ 102336] S 250 2.1.5 Recipient OK 2018-08-27 12:54:41,954 - [ 102337] S 250 2.1.0 Sender OK 2018-08-27 12:54:41,954 - [ 102334] S 2018-08-27 12:54:41,954 - [ 102337] C --> 354 Start mail input; end with . 2018-08-27 12:54:41,954 - [ 102334] C --> 250 2.1.5 Recipient OK 2018-08-27 12:54:41,954 - [ 102334] S 250 2.1.5 Recipient OK 2018-08-27 12:54:41,955 - [ 102341] S 250 2.1.5 Recipient OK 2018-08-27 12:54:41,955 - [ 102342] S 354 Start mail input; end with . 2018-08-27 12:54:41,955 - [ 102339] C --> 250 2.1.5 Recipient OK 2018-08-27 12:54:41,955 - [ 102339] S 250 2.1.5 Recipient OK 2018-08-27 12:54:41,955 - [ 102338] S 354 Start mail input; end with . 2018-08-27 12:54:41,957 - [ 102342] C --> 354 Start mail input; end with . 2018-08-27 12:54:41,958 - [ 102339] C --> 354 Start mail input; end with . 2018-08-27 12:54:41,958 - [ 102338] C --> 354 Start mail input; end with . 2018-08-27 12:54:41,987 - [ 102341] C --> 354 Start mail input; end with . 2018-08-27 12:54:42,025 - [ 102340] C --> 250-W12-Exchange.odb.local Hello [192.168.5.145] 2018-08-27 12:54:42,025 - [ 102340] C --> 250-SIZE 36700160 2018-08-27 12:54:42,025 - [ 102340] C --> 250-PIPELINING 2018-08-27 12:54:42,025 - [ 102340] C --> 250-DSN 2018-08-27 12:54:42,025 - [ 102340] C --> 250-ENHANCEDSTATUSCODES 2018-08-27 12:54:42,026 - [ 102340] C --> 250-AUTH 2018-08-27 12:54:42,026 - [ 102340] C --> 250-8BITMIME 2018-08-27 12:54:42,026 - [ 102340] C --> 250-BINARYMIME 2018-08-27 12:54:42,026 - [ 102340] C --> 250 CHUNKING 2018-08-27 12:54:42,026 - [ 102340] S 2018-08-27 12:54:42,026 - [ 102340] C --> 250 2.1.0 Sender OK 2018-08-27 12:54:42,027 - [ 102340] S 2018-08-27 12:54:42,027 - [ 102340] C --> 250 2.1.5 Recipient OK 2018-08-27 12:54:42,027 - [ 102340] S
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